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<meta name="keywords" content="C1839364, decreased visual acuity, progressive, finding, loss of vision, progressive, loss of visual acuity, loss of visual acuity, progressive, progressive loss of vision, progressive loss of visual acuity, progressive vision loss, progressive visual acuity loss, progressive visual impairment, progressive visual loss, slowly progressive visual loss, vision loss, progressive, visual acuity loss, progressive, visual impairment, progressive, visual loss, progressive, autosomal dominant, autosomal recessive, birth defects, chromosomal disease, chromosome, clinical features, clinical findings, clinical genetics, clinical recommendations, clinvar, congenital chromosomal disease, consumer genetic resources, cytogenetic location, disease characteristics, disease definitions, disease descriptions, disease ontology, disease synonyms, disease vocabulary, dysmorphology, entrez, familial disease, gene, gene-disease relationship, genereviews, genetic disease, genetic disorder, genetic terminology, genetic testing registry, genetics home reference, genomic disease, gtr, hereditary disease, heritable disease, hpo, human phenotype ontology, inherited disease, management guidelines, maternal inheritance, medgen, medical genetics, medical subject headings, mesh, mitochondrial inheritance, mode of inheritance, national center for biotechnology information, national institutes of health, national library of medicine, ncbi, nih, nlm, omim, ordo, orphanet, paternal inheritance, phenome, position statements, professional practice guidelines, rare disease, reference sequence, refseq, snomed ct, syndrome, undiagnosed diseases, x-linked recessive" /><meta name="description" content="A reduction of previously attained ability to see." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Progressive visual loss (Concept Id: C1839364)
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<!--
UID=326867
ConceptID=C1839364
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Progressive visual loss</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326867</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839364</a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Loss of vision, progressive; Loss of visual acuity, progressive; Progressive loss of visual acuity; Progressive vision loss; Progressive visual impairment; Slowly progressive visual loss; Vision loss, progressive; Visual acuity loss, progressive; Visual impairment, progressive; Visual loss, progressive</td></tr>
<tr><td colspan="2" class="small"> </td></tr><tr><td>HPO:</td>
<td><a target="_blank" title="Human Phenotype Ontology" href="https://hpo.jax.org/app/browse/term/HP:0000529">HP:0000529</a></td></tr>
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<div class="portlet mgSection" id="ID_100">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Definition">Definition</h1><a sid="100" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">A reduction of previously attained ability to see. [from <a title="Human Phenotype Ontology" href="http://www.human-phenotype-ontology.org" class="defSource" target="_blank">HPO</a>]</div>
</div>
<div class="portlet mgSection" id="ID_118">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Term_Hierarchy">Term Hierarchy</h1><a sid="118" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln HierarchyGTR"><div class="jig-ncbitabs"><ul><li><a href="#tabGTR">GTR</a></li><li><a href="#tabMGEN">MeSH</a></li></ul><div id="tabGTR"><div class="search_result"><div class="rprts"><div class="chiclet_legend"><span class="chiclet_list" style="position:static;"><span title="Clinical test" class="chiclet Ccolor round">C</span><span>Clinical test,  </span><span title="Research test" class="chiclet Rcolor round">R</span><span>Research test,  </span><span title="OMIM" class="chiclet Ocolor ">O</span><span>OMIM,  </span><span title="GeneReview" class="chiclet Gcolor">G</span><span><em>GeneReviews</em>,  </span><span title="ClinVar" class="chiclet Vcolor">V</span><span>ClinVar  </span></span></div><div id="hierarchy" class="margin_t1"><div class="ds_tree"><ul><li class="matched_ds"><span class="chiclet_list"><span class="chiclet Ccolor round" title="Clinical test"><a target="_blank" href="/gtr/tests/?term=C1839364[DISCUI]&amp;test_type=Clinical" ref="ncbi_uid=326867">C</a></span><span class="chiclet unavailable round" title="Research Tests">R</span><span class="chiclet unavailable" title="OMIM">O</span><span class="chiclet unavailable" title="GeneReviews">G</span><span class="chiclet Vcolor" title="ClinVar"><a target="_blank" href="/clinvar?LinkName=medgen_clinvar&amp;from_uid=326867" ref="ncbi_uid=326867">V</a></span></span><span class="TLline">Progressive visual loss</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/19974" ref="tree=MeSH" title="MedGen record for Clinical finding">Clinical finding</a></span><ul><li><span class="TLline"><a href="/medgen/272632" ref="tree=MeSH" title="MedGen record for Finding by Site or System">Finding by Site or System</a></span><ul><li><span class="TLline"><a href="/medgen/98386" ref="tree=MeSH" title="MedGen record for Neurological finding">Neurological finding</a></span><ul><li><span class="TLline"><a href="/medgen/66714" ref="tree=MeSH" title="MedGen record for Neurological symptom">Neurological symptom</a></span><ul><li><span class="TLline"><a href="/medgen/234776" ref="tree=MeSH" title="MedGen record for Sensory Manifestations">Sensory Manifestations</a></span><ul><li><span class="TLline"><a href="/medgen/784038" ref="tree=MeSH" title="MedGen record for Visual loss">Visual loss</a></span><ul><li><span class="matched_ds">Progressive visual loss</span><ul><li><span class="TLline"><a href="/medgen/343976" ref="tree=MeSH" title="MedGen record for Slow decrease in visual acuity">Slow decrease in visual acuity</a></span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></div></div></div></div>
</div>
<div class="portlet mgSection" id="ID_112">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Conditions_with_this_feature">Conditions with this feature</h1><a sid="112" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln clinfeat">
<div class="divPopper rprt" id="rdis_944"><div><strong>Choroideremia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>944</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0008525</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Choroideremia (CHM) is characterized by progressive chorioretinal degeneration in affected males and milder signs in heterozygous (carrier) females. Typically, symptoms in affected males evolve from night blindness to peripheral visual field loss, with central vision preserved until late in life. Although carrier females are generally asymptomatic, signs of chorioretinal degeneration can be reliably observed with fundus autofluorescence imaging, and after age 25 years with careful fundus examination.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/944">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_66358"><div><strong>Abortive cerebellar ataxia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>66358</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0221061</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">'Behr syndrome' is a clinical term that refers to the constellation of early-onset optic atrophy accompanied by neurologic features, including ataxia, pyramidal signs, spasticity, and mental retardation (Behr, 1909; Thomas et al., 1984).&#13; Patients with mutations in genes other than OPA1 can present with clinical features reminiscent of Behr syndrome. Mutations in one of these genes, OPA3 (606580), result in type III 3-methylglutaconic aciduria (MGCA3; 258501). Lerman-Sagie (1995) noted that the abnormal urinary pattern in MGCA3 may not be picked up by routine organic acid analysis, suggesting that early reports of Behr syndrome with normal metabolic features may actually have been 3-methylglutaconic aciduria type III.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/66358">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_152676"><div><strong>Basal laminar drusen</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>152676</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0730295</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Drusen are extracellular deposits that accumulate below the retinal pigment epithelium on Bruch membrane. They appear as slightly raised, yellow subretinal nodules randomly scattered in the macula. 'Drusen' is the plural for 'Druse,' German for 'nodule' or 'crystal' (summary by Bok, 2002, Boon et al., 2008).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/152676">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_155549"><div><strong>Neuronal ceroid lipofuscinosis 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>155549</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0751383</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; The hallmark of CLN3 is the ultrastructural pattern of lipopigment with a 'fingerprint' profile, which can have 3 different appearances: pure within a lysosomal residual body; in conjunction with curvilinear or rectilinear profiles; and as a small component within large membrane-bound lysosomal vacuoles. The combination of fingerprint profiles within lysosomal vacuoles is a regular feature of blood lymphocytes from patients with CLN3 (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/155549">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_156006"><div><strong>Spinocerebellar ataxia 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>156006</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C0752125</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spinocerebellar ataxia type 7 (SCA7) comprises a phenotypic spectrum ranging from adolescent- or adult-onset progressive cerebellar ataxia and cone-rod retinal dystrophy to infantile or early-childhood onset with multiorgan failure, an accelerated course, and early death. Anticipation in this nucleotide repeat disorder may be so dramatic that within a family a child with infantile or early-childhood onset may be diagnosed with what is thought to be an unrelated neurodegenerative disorder years before a parent or grandparent with a CAG repeat expansion becomes symptomatic. In adolescent-onset SCA7, the initial manifestation is typically impaired vision, followed by cerebellar ataxia. In those with adult onset, progressive cerebellar ataxia usually precedes the onset of visual manifestations. While the rate of progression varies in these two age groups, the eventual result for almost all affected individuals is loss of vision, severe dysarthria and dysphagia, and a bedridden state with loss of motor control.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/156006">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_266149"><div><strong>Cardio-facio-cutaneous syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>266149</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1275081</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cardiofaciocutaneous (CFC) syndrome is characterized by cardiac abnormalities (pulmonic stenosis and other valve dysplasias, septal defects, hypertrophic cardiomyopathy, rhythm disturbances), distinctive craniofacial appearance, and cutaneous abnormalities (including xerosis, hyperkeratosis, ichthyosis, keratosis pilaris, ulerythema ophryogenes, eczema, pigmented moles, hemangiomas, and palmoplantar hyperkeratosis). The hair is typically sparse, curly, fine or thick, and woolly or brittle; eyelashes and eyebrows may be absent or sparse. Nails may be dystrophic or fast growing. Affected individuals typically have some form of neurologic and/or cognitive delay (ranging from mild to severe). Most individuals have severe feeding issues, which can contribute to poor growth, and many require nasogastric or gastrostomy tube feeding. Many affected individuals have eye findings, including strabismus, nystagmus, refractive errors, and optic nerve hypoplasia. Seizures may be present and can be refractory to therapy.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/266149">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_305533"><div><strong>Lattice corneal dystrophy Type I</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>305533</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1690006</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Lattice corneal dystrophy type I (CDL1) is an autosomal dominant condition characterized by deposition of amyloid in the corneal stroma. Onset occurs in the first or second decade of life and progresses over time. The anterior stroma has rod-like or linear opacities. Recurrent erosions are common and central anterior stromal haze may develop with age. The lesions usually affect the anterior and central corneas, leaving a relatively normal periphery (summary by Lin et al., 2016).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/305533">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_318633"><div><strong>Cerebellar ataxia-areflexia-pes cavus-optic atrophy-sensorineural hearing loss syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>318633</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1832466</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">ATP1A3-related disorder consists of heterogenous overlapping clinical findings that pertain to the four most common historically defined phenotypes: alternating hemiplegia of childhood (AHC); cerebellar ataxia, areflexia, pes cavus, optic atrophy, sensorineural hearing loss (CAPOS) syndrome; relapsing encephalopathy with cerebellar ataxia (RECA) / fever-induced paroxysmal weakness and encephalopathy (FIPWE); and rapid-onset dystonia-parkinsonism (RDP). These phenotypes exist on a spectrum and should be regarded as classifications of convenience. AHC is characterized by onset prior to age 18 months of paroxysmal hemiplegic episodes, predominately involving the limbs and/or the whole body, lasting from minutes to hours to days (and sometimes weeks) with remission only during sleep, only to resume after awakening. Although paroxysmal episodic neurologic dysfunction predominates early in the disease course, with age increasingly persistent neurologic dysfunction predominates, including oculomotor apraxia and strabismus, dysarthria, speech and language delay, developmental delay, and impairment in social skills. Other system involvement may include cardiovascular (cardiac conduction abnormalities) and gastrointestinal (constipation, vomiting, anorexia, diarrhea, nausea, and abdominal pain) manifestations. CAPOS syndrome presents in infancy or childhood (usually ages 6 months to 5 years) with cerebellar ataxia during or after a fever. The acute febrile encephalopathy may include hypotonia, flaccidity, nystagmus, strabismus, dysarthria/anarthria, lethargy, loss of consciousness, and even coma. Usually, considerable recovery occurs within days to weeks; however, persistence of some degree of ataxia and other manifestations is typical. RECA/FIPWE primarily presents with fever-induced episodes (infancy to age 5 years); however, first episodes can occur occasionally in young adults during illnesses such as mononucleosis. Recurrent fever-induced episodes may be ataxia-dominated RECA-like motor manifestations or FIPWE-like non-motor manifestations (encephalopathy) and can vary among affected individuals. Notably, RECA-like and FIPWE-like manifestations can occur in the same individual in different episodes. In some individuals episodes seem to decrease in frequency and severity over time, whereas others might experience worsening of manifestations. RDP presents in individuals ages 18 months to 60 years and older with dystonia that is typically of abrupt onset over hours to several weeks, though some individuals report gradual onset over the course of months. A stress-related trigger is identifiable in up to 75% of individuals. Dystonia rarely improves significantly after onset; some individuals report mild improvement over time, whereas others can experience subsequent episodes of abrupt worsening months to years after onset. Limbs are usually the first to be affected, although by the time of diagnosis typically many years after onset individuals most commonly display a bulbar-predominant generalized dystonia. Exceptions are common and a rostrocaudal gradient is rare rather than typical. Migraines and seizures are also observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/318633">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_332304"><div><strong>Neuronal ceroid lipofuscinosis 9</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>332304</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1836841</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; For a discussion of genetic heterogeneity of neuronal ceroid lipofuscinosis, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/332304">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_324684"><div><strong>Spondylometaphyseal dysplasia-cone-rod dystrophy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>324684</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1837073</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spondylometaphyseal dysplasia with cone-rod dystrophy (SMDCRD) is characterized by postnatal growth deficiency resulting in profound short stature, rhizomelia with bowing of the lower extremities, platyspondyly with anterior vertebral protrusions, progressive metaphyseal irregularity and cupping with shortened tubular bones, and early-onset progressive visual impairment associated with a pigmentary maculopathy and electroretinographic evidence of cone-rod dysfunction (summary by Hoover-Fong et al., 2014).&#13; Yamamoto et al. (2014) reviewed 16 reported cases of SMDCRD, noting that all affected individuals presented uniform skeletal findings, with rhizomelia and bowed lower limbs observed in the first year of life, whereas retinal dystrophy had a more variable age of onset. There was severe disproportionate short stature, with a final height of less than 100 cm; scoliosis was usually mild. Visual loss was progressive, with stabilization in adolescence.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/324684">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374004"><div><strong>Neuronal ceroid lipofuscinosis 8</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374004</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1838570</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment patterns observed most often in CLN8 comprise mixed combinations of 'granular,' 'curvilinear,' and 'fingerprint' profiles (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374004">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374254"><div><strong>Charcot-Marie-Tooth disease X-linked recessive 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374254</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1839566</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Phosphoribosylpyrophosphate synthetase (PRS) deficiency, an X-linked disorder, is a phenotypic continuum comprising three disorders previously thought to be clinically distinct: Arts syndrome, Charcot-Marie-Tooth neuropathy X type 5 (CMTX5), and X-linked nonsyndromic sensorineural hearing loss (DFNX1). In affected males, the PRS deficiency phenotypic spectrum ranges from severe congenital profound sensorineural hearing loss, intellectual disability, delayed motor development, and progressive ophthalmologic involvement (retinal dystrophy and optic atrophy) to normal cognitive abilities and relatively later-onset, somewhat milder manifestations, such as mild sensorineural hearing loss, peripheral neuropathy, and gait ataxia. Heterozygous females can show isolated and/or milder manifestations in the PRS deficiency spectrum. To date, 40 families with PRS deficiency have been reported.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/374254">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337598"><div><strong>Cone-rod dystrophy 10</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337598</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1846529</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cone-rod dystrophy-10 (CORD10) is characterized by progressive loss of visual acuity and color vision, followed by night blindness and loss of peripheral vision. Patients may experience photophobia and epiphora in bright light (Abid et al., 2006).&#13; Mutation in SEMA4A can also cause a form of retinitis pigmentosa (RP35; 610282).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of cone-rod dystrophy, see 120970.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337598">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_337888"><div><strong>Fundus dystrophy, pseudoinflammatory, recessive form</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>337888</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1849694</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/337888">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376792"><div><strong>Neuronal ceroid lipofuscinosis 5</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376792</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850442</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment patterns observed most often in CLN5 comprise mixed combinations of 'granular,' 'curvilinear,' and 'fingerprint' profiles. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376792">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_340540"><div><strong>Neuronal ceroid lipofuscinosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>340540</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1850451</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment pattern seen most often in CLN1 is referred to as granular osmiophilic deposits (GROD). The patterns most often observed in CLN2 and CLN3 are 'curvilinear' and 'fingerprint' profiles, respectively. CLN4, CLN5, CLN6, CLN7, and CLN8 show mixed combinations of granular, curvilinear, fingerprint, and rectilinear profiles. The clinical course includes progressive dementia, seizures, and progressive visual failure (Mole et al., 2005).&#13; Zeman and Dyken (1969) referred to these conditions as the 'neuronal ceroid lipofuscinoses.' Goebel (1995) provided a comprehensive review of the NCLs and noted that they are possibly the most common group of neurodegenerative diseases in children.&#13; Mole et al. (2005) provided a detailed clinical and genetic review of the neuronal ceroid lipofuscinoses.&#13; Genetic Heterogeneity of Neuronal Ceroid Lipofuscinosis&#13; See also CLN2 (204500), caused by mutation in the TPP1 gene (607998) on chromosome 11p15; CLN3 (204200), caused by mutation in the CLN3 gene (607042) on 16p12; CLN4 (162350), caused by mutation in the DNAJC5 gene (611203) on 20q13; CLN5 (256731), caused by mutation in the CLN5 gene (608102) on 13q22; CLN6A (601780) and CLN6B (204300), both caused by mutation in the CLN6 gene (606725) on 15q21; CLN7 (610951), caused by mutation in the MFSD8 gene (611124) on 4q28; CLN8 (600143) and the Northern epilepsy variant of CLN8 (610003), both caused by mutation in the CLN8 gene (607837) on 8p23; CLN10 (610127), caused by mutation in the CTSD gene (116840) on 11p15; CLN11 (614706), caused by mutation in the GRN gene (138945) on 17q21; CLN13 (615362), caused by mutation in the CTSF gene (603539) on 11q13; and CLN14 (611726), caused by mutation in the KCTD7 gene (611725) on 7q11.&#13; CLN9 (609055) has not been molecularly characterized.&#13; A disorder that was formerly designated neuronal ceroid lipofuscinosis-12 (CLN12) is now considered to be a variable form of Kufor-Rakeb syndrome (KRS; 606693).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/340540">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347406"><div><strong>Donnai-Barrow syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347406</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1857277</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Donnai-Barrow syndrome (DBS) is characterized by typical craniofacial features (large anterior fontanelle, wide metopic suture, widow's peak, markedly widely spaced eyes, enlarged globes, downslanted palpebral fissures, posteriorly rotated ears, depressed nasal bridge, and short nose. Ocular complications include high myopia, retinal detachment, retinal dystrophy, and progressive vision loss. Additional common features include agenesis of the corpus callosum, sensorineural hearing loss, intellectual disability, and congenital diaphragmatic hernia and/or omphalocele. Both inter- and intrafamilial phenotypic variability are observed.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347406">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347798"><div><strong>Ataxia-hypogonadism-choroidal dystrophy syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347798</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859093</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">PNPLA6 disorders span a phenotypic continuum characterized by variable combinations of cerebellar ataxia; upper motor neuron involvement manifesting as spasticity and/or brisk reflexes; chorioretinal dystrophy associated with variable degrees of reduced visual function; and hypogonadotropic hypogonadism (delayed puberty and lack of secondary sex characteristics). The hypogonadotropic hypogonadism occurs either in isolation or as part of anterior hypopituitarism (growth hormone, thyroid hormone, or gonadotropin deficiencies). Common but less frequent features are peripheral neuropathy (usually of axonal type manifesting as reduced distal reflexes, diminished vibratory sensation, and/or distal muscle wasting); hair anomalies (long eyelashes, bushy eyebrows, or scalp alopecia); short stature; and impaired cognitive functioning (learning disabilities in children; deficits in attention, visuospatial abilities, and recall in adults). Some of these features can occur in distinct clusters on the phenotypic continuum: Boucher-Neuhäuser syndrome (cerebellar ataxia, chorioretinal dystrophy, and hypogonadotropic hypogonadism); Gordon Holmes syndrome (cerebellar ataxia, hypogonadotropic hypogonadism, and to a variable degree brisk reflexes); Oliver-McFarlane syndrome (trichomegaly, chorioretinal dystrophy, short stature, intellectual disability, and hypopituitarism); Laurence-Moon syndrome; and spastic paraplegia type 39 (SPG39) (upper motor neuron involvement, peripheral neuropathy, and sometimes reduced cognitive functioning and/or cerebellar ataxia).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347798">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_347895"><div><strong>Bietti crystalline corneoretinal dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>347895</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1859486</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bietti crystalline dystrophy (BCD) is a chorioretinal degeneration characterized by the presence of yellow-white crystals and/or complex lipid deposits in the retina and (to a variable degree) the cornea. Progressive atrophy and degeneration of the retinal pigment epithelium (RPE) / choroid lead to symptoms similar to those of other forms of retinal degeneration that fall under the category of retinitis pigmentosa and allied disorders, namely: reduced visual acuity, poor night vision, abnormal retinal electrophysiology, visual field loss, and often impaired color vision. Marked asymmetry between eyes is not uncommon. Onset is typically during the second to third decade of life, but ranges from the early teenage years to beyond the third decade. With time, loss of peripheral visual field, central acuity, or both result in legal blindness in most if not all affected individuals.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/347895">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_348124"><div><strong>Retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>348124</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1860518</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations (RVCL-S) is a small-vessel disease that affects highly vascularized tissues including the retina, brain, liver, and kidneys. Age of onset is often between 35 and 50 years. The most common presenting finding is decreased visual acuity and/or visual field defects. Neurologic manifestations may include hemiparesis, facial weakness, aphasia, and hemianopsia. Migraines and seizures are less frequently described. Renal manifestations may include mild-to-moderate increase in serum creatinine and mild proteinuria; progression to end-stage renal disease (ESRD) is uncommon. Hepatic manifestations frequently include mildly elevated levels of alkaline phosphatase and gamma-glutamyltransferase (GGT). Less common findings include psychiatric disorders, hypertension, mild-to-moderate anemia, and Raynaud phenomenon.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/348124">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_396230"><div><strong>Cataract 8 multiple types</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>396230</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1861833</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The Volkmann type of cataract has been variously described as progressive, central, or zonular, with opacities in the embryonic, fetal, and juvenile nucleus and around the anterior and posterior Y-suture. Expression is highly variable, ranging from hardly recognizable opacities in the lens to dense cataracts. Affected members may thus be unaware of having the disease (Eiberg et al., 1995).&#13; The preferred title/symbol of this entry was formerly 'Cataract, Congenital, Volkmann Type; CCV.'</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/396230">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400475"><div><strong>Age related macular degeneration 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400475</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864205</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Age-related macular degeneration (ARMD) is a progressive degeneration of photoreceptors and underlying retinal pigment epithelium (RPE) cells in the macula region of the retina. It is a highly prevalent disease and a major cause of blindness in the Western world. Drusen, pale excrescences of variable size, and other deposits accumulate below the RPE on the Bruch membrane; clinical and histopathologic investigations have shown that these extracellular deposits are the hallmark of early ARMD. As ARMD advances, areas of geographic atrophy of the RPE can cause visual loss, or choroidal neovascularization can occur to cause wet, or exudative, ARMD with accompanying central visual loss (summary by De et al., 2007).&#13; Genetic Heterogeneity of Age-Related Macular Degeneration&#13; ARMD2 (153800) is associated with mutation in the ABCR gene (601691) on chromosome 1p, and ARMD3 (608895) is caused by mutation in the FBLN5 gene (604580) on chromosome 14q31. Up to 50% of the attributable risk of age-related macular degeneration (ARMD4; 610698) appears to be explained by a polymorphism in the CFH gene (134370.0008). ARMD5 (613761) and ARMD6 (613757) are associated with mutation in the ERCC6 (609413) and RAX2 (610362) genes, respectively. ARMD7 (610149) and ARMD8 (613778), which both represent susceptibility linked to chromosome 10q26, are associated with single-nucleotide polymorphisms in the HTRA1 (602194) and ARMS2 (611313) genes, respectively. ARMD9 (611378) is associated with single-nucleotide polymorphisms in the C3 gene (120700). ARMD10 (611488) maps to chromosome 9q32 and may be associated with a polymorphism in the TLR4 gene (603030). ARMD11 (611953) is association with variation in the CST3 gene (604312); ARMD12 (613784) with variation in the CX3CR1 gene (601470); and ARMD13 (615439) with variation in the CFI gene (217030). ARMD14 (615489) is associated with variation in or near the C2 (613927) and CFB (138470) genes on chromosome 6p21. ARMD15 (615591) is associated with variation in the C9 gene (120940). There is evidence for a form of ARMD caused by mutation in the mitochondrial gene MTTL1 (590050).&#13; A haplotype carrying deletion of the complement factor H-related genes CFHR1 (134371) and CFHR3 (605336) is also associated with reduced risk of ARMD.&#13; Lotery and Trump (2007) reviewed the molecular biology of age-related macular degeneration and tabulated the genes associated with ARMD, including those with only positive findings versus genes for which conflicting results have been found.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400475">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_400601"><div><strong>Congenital stromal corneal dystrophy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>400601</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1864738</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital stromal corneal dystrophy is characterized by the presence of bilateral corneal opacities that can be seen at or shortly after birth. The surface of the cornea is normal or slightly irregular; small opacities are seen throughout the stroma of the entire cornea and give the cornea a cloudy appearance. Strabismus is common. Nystagmus is uncommon. Amblyopia can develop in children.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/400601">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_356104"><div><strong>Cone dystrophy 3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>356104</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1865869</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Progressive cone dystrophy usually presents in childhood or early adult life, with many patients developing rod photoreceptor involvement in later life, thereby leading to considerable overlap between progressive cone dystrophy and cone-rod dystrophy. Both progressive cone dystrophy and cone-rod dystrophy have been associated with mutation in the GUCA1A gene (Michaelides et al., 2006).&#13; Intrafamilial variability in GUCA1A-associated macular disease ranges from mild photoreceptor degeneration to central areolar choroidal dystrophy (CACD), a form of retinal degeneration that primarily involves the macula and is characterized by a well-defined atrophic region of retinal pigment epithelium and choriocapillaris in the latest stage (Chen et al., 2017).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/356104">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_356747"><div><strong>Retinal cone dystrophy type 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>356747</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1867326</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/356747">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_406281"><div><strong>Neuronal ceroid lipofuscinosis 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>406281</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C1876161</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">The neuronal ceroid lipofuscinoses (NCL; CLN) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The clinical course includes progressive dementia, seizures, and progressive visual failure. The lipopigment pattern seen most often in CLN2 consists of 'curvilinear' profiles (Mole et al., 2005).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/406281">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382678"><div><strong>Craniodiaphyseal dysplasia, autosomal dominant</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382678</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2675746</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Craniodiaphyseal dysplasia (CDD) is a severe bone dysplasia characterized by massive generalized hyperostosis and sclerosis, especially involving the skull and facial bones. Progressive bony encroachment upon cranial foramina leads to severe neurologic impairment in childhood (summary by Brueton and Winter, 1990). The sclerosis is so severe that the resulting facial distortion is referred to as 'leontiasis ossea' (leonine facies), and the bone deposition results in progressive stenosis of craniofacial foramina (summary by Kim et al., 2011).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382678">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_436770"><div><strong>Autosomal recessive osteopetrosis 7</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>436770</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2676766</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive osteopetrosis-7 (OPTB7) is an osteoclast-poor form of osteopetrosis with hypogammaglobulinemia. Clinical features include visual impairment, recurrent respiratory infections, poor growth, developmental delay, and increased bone density (Guerrini et al., 2008).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of autosomal recessive osteopetrosis, see OPTB1 (259700).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/436770">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_413025"><div><strong>Cone-rod dystrophy 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>413025</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C2750720</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">There are more than 30 types of cone-rod dystrophy, which are distinguished by their genetic cause and their pattern of inheritance: autosomal recessive, autosomal dominant, and X-linked. Additionally, cone-rod dystrophy can occur alone without any other signs and symptoms or it can occur as part of a syndrome that affects multiple parts of the body.\n\nThe first signs and symptoms of cone-rod dystrophy, which often occur in childhood, are usually decreased sharpness of vision (visual acuity) and increased sensitivity to light (photophobia). These features are typically followed by impaired color vision (dyschromatopsia), blind spots (scotomas) in the center of the visual field, and partial side (peripheral) vision loss. Over time, affected individuals develop night blindness and a worsening of their peripheral vision, which can limit independent mobility. Decreasing visual acuity makes reading increasingly difficult and most affected individuals are legally blind by mid-adulthood. As the condition progresses, individuals may develop involuntary eye movements (nystagmus).\n\nCone-rod dystrophy is a group of related eye disorders that causes vision loss, which becomes more severe over time. These disorders affect the retina, which is the layer of light-sensitive tissue at the back of the eye. In people with cone-rod dystrophy, vision loss occurs as the light-sensing cells of the retina gradually deteriorate.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/413025">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462262"><div><strong>Cone-rod dystrophy 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462262</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3150912</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cone-rod dystrophy-15 (CORD15) is characterized by onset of reduced vision in the third to fifth decades of life. Visual acuity progressively worsens, and most patients exhibit reduced color vision and central scotomas (Cohen et al., 2012; Sobolewska et al., 2023). Retinitis pigmentosa-65 (RP65) is an adult-onset form of RP, with night blindness developing in the second to fourth decades of life. In addition to constriction of visual fields, patients may experience photophobia, reduced visual acuity, and difficulties with color vision (Henderson et al., 2010; Bessette et al., 2018; Dawood et al., 2021). Retinal macular dystrophy-5 (MCDR5) is a late-onset form of macular dystrophy, with most patients noting symptoms in the fourth to sixth decades of life. Symptoms include reduced visual acuity, glare, poor contrast vision, and metamorphopsia; night blindness is uncommon (Stingl et al., 2017; Charbel Issa et al., 2019; Ba-Abbad et al., 2021). Macular atrophy is a characteristic feature in all patients, and early involvement may be observed even in patients with RP who exhibit relatively preserved visual acuity (Malechka et al., 2022).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of cone-rod dystrophy, see 120970; for retinitis pigmentosa, see 268000; for retinal macular dystrophy, see 136550.&#13; Reviews&#13; Bessette et al. (2018) reviewed published reports of patients with disease-causing mutations in the CDHR1 gene. The median age of patients was 36 years, and the majority retained visual acuity of 20/70 or better in at least one eye. Most patients developed symptoms between the first and third decades of life (range, infancy through fourth decade). Night blindness was the most common presenting symptom (54%), followed by photosensitivity (39%) and decreased vision (31%). Macular atrophy was the most common fundus feature reported (96%), followed by vascular attenuation (69%) and peripheral bone spicules (54%). The authors noted significant inter- and intrafamilial phenotypic variability among patients with CDHR1 mutations.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462262">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462578"><div><strong>Retinitis pigmentosa 38</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462578</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3151228</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinitis pigmentosa (RP) describes a group of disorders with progressive degeneration of rod and cone photoreceptors in a rod-cone pattern of dysfunction. RP has a prevalence of 1 in 3,500, and is genetically and phenotypically heterogeneous (summary by Mackay et al., 2010).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of retinitis pigmentosa, see 268000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462578">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482001"><div><strong>Neurodegeneration with brain iron accumulation 4</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482001</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3280371</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mitochondrial membrane protein-associated neurodegeneration (MPAN) is characterized initially by gait changes followed by progressive spastic paresis, progressive dystonia (which may be limited to the hands and feet or more generalized), neuropsychiatric abnormalities (emotional lability, depression, anxiety, impulsivity, compulsions, hallucinations, perseveration, inattention, and hyperactivity), and cognitive decline. Additional early findings can include dysphagia, dysarthria, optic atrophy, axonal neuropathy, parkinsonism, and bowel/bladder incontinence. Survival is usually well into adulthood. End-stage disease is characterized by severe dementia, spasticity, dystonia, and parkinsonism.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482001">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_482675"><div><strong>Cone-rod dystrophy 16</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>482675</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3281045</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Cone-rod dystrophy (CORD) and retinitis pigmentosa (RP) are clinically and genetically overlapping heterogeneous retinal dystrophies. RP is characterized initially by rod photoreceptor dysfunction, giving rise to night blindness, which is followed by progressive rod and cone photoreceptor dystrophy, resulting in midperipheral vision loss, tunnel vision, and sometimes blindness. In contrast to RP, CORD is characterized by a primary loss of cone photoreceptors and subsequent or simultaneous loss of rod photoreceptors. The disease in most cases becomes apparent during primary-school years, and symptoms include photoaversion, decrease in visual acuity with or without nystagmus, color vision defects, and decreased sensitivity of the central visual field. Because rods are also involved, night blindness and peripheral vision loss can occur. The diagnosis of CORD is mainly based on electroretinogram (ERG) recordings, in which cone responses are more severely reduced than, or equally as reduced as rod responses (summary by Estrada-Cuzcano et al., 2012).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/482675">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_763933"><div><strong>Choroideremia-deafness-obesity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>763933</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3551019</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An X-linked retinal dystrophy characterized by choroideremia, causing in affected males progressive nyctalopia and eventual central blindness. Obesity, moderate intellectual disability and congenital mixed (sensorineural and conductive) deafness are also observed. Female carriers show typical retinal changes indicative of the choroideremia carrier state.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/763933">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_811458"><div><strong>Juvenile retinoschisis</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>811458</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3714753</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">X-linked congenital retinoschisis (XLRS) is characterized by symmetric bilateral macular involvement with onset in the first decade of life, in some cases as early as age three months. Fundus examination shows areas of schisis (splitting of the nerve fiber layer of the retina) in the macula, sometimes giving the impression of a spoke wheel pattern. Schisis of the peripheral retina, predominantly inferotemporally, occurs in approximately 50% of individuals. Affected males typically have 20/60 to 20/120 vision. Visual acuity often deteriorates during the first and second decades of life but then remains relatively stable until the fifth or sixth decade.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/811458">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815853"><div><strong>Age related macular degeneration 13</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815853</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809523</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Age-related macular degeneration (ARMD) is a multifactorial disorder of the central retina that is the most prevalent cause of progressive vision loss in the developed world. As in other chronic age-related diseases, most cases result from interplay between multiple environmental and genetic factors, with a resultant spectrum of phenotypes. In rare cases, ARMD may manifest early, but there is an exponential rise in prevalence after the age of 60 years (summary by Pras et al., 2015).&#13; For a phenotypic description and a discussion of genetic heterogeneity of age-related macular degeneration (ARMD), see 603075.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815853">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_815995"><div><strong>Early-onset progressive neurodegeneration-blindness-ataxia-spasticity syndrome</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>815995</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C3809665</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Spastic paraplegia-79B (SPG79B) is an autosomal recessive progressive neurologic disorder characterized by onset of spastic paraplegia and optic atrophy in the first decade of life. Additional features are variable, but may include peripheral neuropathy, cerebellar ataxia, and cognitive impairment (summary by Rydning et al., 2017).&#13; For a discussion of genetic heterogeneity of autosomal recessive spastic paraplegia, see SPG5A (270800).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/815995">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_895482"><div><strong>Neuropathy, hereditary motor and sensory, type 6B</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>895482</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225302</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hereditary motor and sensory neuropathy type VIB is an autosomal recessive complex progressive neurologic disorder characterized mainly by early-onset optic atrophy resulting in progressive visual loss and peripheral axonal sensorimotor neuropathy with highly variable age at onset and severity. Affected individuals may also have cerebellar or pontocerebellar atrophy on brain imaging, and they may show abnormal movements such as ataxia, dysmetria, and myoclonus (summary by Abrams et al., 2015).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of HMSN6, see HMSN6A (601152).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/895482">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_902559"><div><strong>Exudative vitreoretinopathy 6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>902559</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4225316</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Familial exudative vitreoretinopathy is a hereditary disorder that can cause vision loss that worsens over time. This condition affects the retina, the specialized light-sensitive tissue that lines the back of the eye. In people with this disorder, blood vessels do not fully develop at the outer edges (periphery) of the retina, which reduces the blood supply to this tissue. This prolonged reduction in blood supply (chronic ischemia) causes continued damage to the retina and can lead to worsening of the condition. \n\nThe signs and symptoms of familial exudative vitreoretinopathy vary widely, even within the same family. In many affected individuals, the retinal abnormalities never cause any vision problems. Other people with this condition develop abnormal vessels that leak. This  causes chronic inflammation which, over time, can lead to fluid under the retina (exudate). A reduction in the retina's blood supply causes the retina to fold, tear, or separate from the back of the eye (retinal detachment). The resulting retinal damage can lead to vision loss and blindness. Other eye abnormalities are also possible, including eyes that do not look in the same direction (strabismus) and a visible whiteness (leukocoria) in the normally black pupil.\n\nSome people with familial exudative vitreoretinopathy also have a condition known as osteoporosis-pseudoglioma syndrome, which is characterized by reduced bone density. People with this condition have weakened bones and an increased risk of fractures.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/902559">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_924303"><div><strong>Sialidosis type 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>924303</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4282398</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Sialidosis is an autosomal recessive disorder characterized by the progressive lysosomal storage of sialylated glycopeptides and oligosaccharides caused by a deficiency of the enzyme neuraminidase. Common to the sialidoses is the accumulation and/or excretion of sialic acid (N-acetylneuraminic acid) covalently linked ('bound') to a variety of oligosaccharides and/or glycoproteins (summary by Lowden and O'Brien, 1979). The sialidoses are distinct from the sialurias in which there is storage and excretion of 'free' sialic acid, rather than 'bound' sialic acid; neuraminidase activity in sialuria is normal or elevated. Salla disease (604369) is a form of 'free' sialic acid disease.&#13; Classification&#13; Lowden and O'Brien (1979) provided a logical nosology of neuraminidase deficiency into sialidosis type I and type II. Type I is the milder form, also known as the 'normosomatic' type or the cherry red spot-myoclonus syndrome. Sialidosis type II is the more severe form with an earlier onset, and is also known as the 'dysmorphic' type. Type II has been subdivided into juvenile and infantile forms. Other terms for sialidosis type II are mucolipidosis I and lipomucopolysaccharidosis.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/924303">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1619674"><div><strong>Retinitis pigmentosa 80</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1619674</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4540439</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1619674">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1633653"><div><strong>Leukodystrophy, hypomyelinating, 15</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1633653</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4693733</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Hypomyelinating leukodystrophy-15 (HLD15) is an autosomal recessive neurodegenerative disorder characterized by onset of motor and cognitive impairment in the first or second decade of life. Features include dystonia, ataxia, spasticity, and dysphagia. Most patients develop severe optic atrophy, and some have hearing loss. Brain imaging shows hypomyelinating leukodystrophy with thin corpus callosum. The severity of the disorder is variable (summary by Mendes et al., 2018)&#13; For a discussion of genetic heterogeneity of HLD, see 312080.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1633653">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1648453"><div><strong>Joubert syndrome 35</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1648453</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C4748442</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Joubert syndrome-35 (JBTS35) is an autosomal recessive disorder characterized by brain malformations that result in developmental delay, oculomotor apraxia, and hypotonia. Some patients have renal and retinal involvement (Alkanderi et al., 2018).&#13; For a discussion of genetic heterogeneity of Joubert syndrome, see JBTS1 (213300).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1648453">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1684789"><div><strong>Retinitis pigmentosa 86</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1684789</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5231428</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinitis pigmentosa-86 (RP86) is characterized by night blindness followed by progressive narrowing of visual fields and decline in visual acuity, with typical findings of RP on fundus examination, including attenuated retinal vessels, waxy pallor of the optic disc, and bone spicule-like pigmentation (de Bruijn et al., 2018).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of retinitis pigmentosa, see 268000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1684789">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1784506"><div><strong>Deafness, congenital, and adult-onset progressive leukoencephalopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1784506</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5543087</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital deafness and adult-onset progressive leukoencephalopathy (DEAPLE) is an autosomal recessive complex neurodegenerative disorder characterized by congenital neurosensory deafness followed by onset of neurodegenerative symptoms, including pyramidal signs and cognitive decline, in young adulthood. Some patients may have mild developmental delay or learning difficulties in childhood, but most can function independently. The onset of motor and cognitive decline in adulthood can be rapid and may result in early death. Brain imaging shows diffuse white matter abnormalities affecting various brain regions, consistent with a progressive leukoencephalopathy. More variable additional features may include visual impairment and axonal peripheral neuropathy (summary by Scheidecker et al., 2019).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1784506">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1790423"><div><strong>Ceroid lipofuscinosis, neuronal, 6A</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1790423</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5551375</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Neuronal ceroid lipofuscinosis-6A (CLN6A) is an autosomal recessive neurodegenerative disorder with a variable age at onset in the first years of life after normal early development. Affected individuals have progressive decline of neurologic function, including visual deterioration in most, cognitive impairment, loss of motor function, and seizures. As with all CLNs, CLN6A is characterized pathologically by the intracellular accumulation of autofluorescent lipopigment storage material in different patterns ultrastructurally. The lipopigment patterns observed most often in CLN6A comprises mixed combinations of 'curvilinear' and 'fingerprint' profiles (summary by Sharp et al., 2003; Mole et al., 2005).&#13; For a discussion of genetic heterogeneity of CLN, see CLN1 (256730).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1790423">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1845294"><div><strong>Leber-like hereditary optic neuropathy, autosomal recessive 2</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1845294</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5882713</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive Leber-like hereditary optic neuropathy-2 (LHONAR2) is characterized by subacute bilateral or asymmetrical visual loss, optic nerve pseudoedema and peripapillary telangiectasia in the early phase of the disease, and eventual partial recovery in some patients (Gerber et al., 2017).&#13; For a discussion of genetic heterogeneity of autosomal recessive Leber-like hereditary optic neuropathy, see LHONAR1 (619382).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1845294">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1862491"><div><strong>Leukoencephalopathy, porphyria-related</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1862491</dd><dt><span class="dotprefix"></span>Concept ID: </dt><dd><a href="/medgen/docs/help/#sources" target="_blank" title="Concept Unique Identifier from NLM's Unified Medical Language system (UMLS)&#10;Click for more information.">C5935575</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Porphyria-associated leukoencephalopathy (LENCEP) is an autosomal recessive disorder characterized by the onset of variable and slowly progressive neurologic abnormalities in childhood or adolescence with survival to late adulthood. Features include spastic paraparesis, cerebellar ataxia, peripheral axonal neuropathy, ocular abnormalities, and leukoencephalopathy affecting the deep cerebral white matter on brain imaging. Some individuals have more severe manifestations, such as optic atrophy with progressive visual loss, loss of ambulation, and mild cognitive decline. Laboratory studies show variably increased plasma and urinary levels of delta-aminolevulinic acid (ALA), porphobilinogen (PBG), and uroporphyrin due to decreased HMBS enzyme activity. The severity of the disorder appears to depend on the particular genotype and the variant effects on HMBS enzymatic activity; intrafamilial variability is often observed. The clinical discrepancies may be particularly apparent in individuals with compound heterozygous HMBS variants that have different effects on enzyme function (Stutterd et al., 2021).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1862491">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_66358" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Abortive cerebellar ataxia</a></div>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Professional_guidelines">Professional guidelines</h1><a sid="105" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">PubMed<a class="help jig-ncbi-popper" data-jig="ncbipopper" href="#guidelinesHelpPM"><img class="pulldown" src="//static.pubmed.gov/portal/portal3rc.fcgi/4223267/img/4204968" /></a></h3>
<div class="nl"><a target="_blank" href="/pubmed/38508214">RPE65-Associated Retinal Dystrophies: Phenotypes and Treatment Effects with Voretigene Neparvovec.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Stingl K,
Priglinger C,
Herrmann P</span><br />
<span class="medgenPMjournal">Klin Monbl Augenheilkd</span>
2024 Mar;241(3):259-265.
Epub 2024 Mar 20
doi: 10.1055/a-2227-3671.
<span class="bold">PMID: </span><a href="/pubmed/38508214" target="_blank">38508214</a></div>
<div class="nl"><a target="_blank" href="/pubmed/31797309">Primary sellar melanocytoma: pathological, clinical and treatment review.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Albano L,
Losa M,
Barzaghi LR,
Spatola G,
Panni P,
Terreni MR,
Mortini P</span><br />
<span class="medgenPMjournal">J Endocrinol Invest</span>
2020 May;43(5):575-585.
Epub 2019 Dec 3
doi: 10.1007/s40618-019-01158-8.
<span class="bold">PMID: </span><a href="/pubmed/31797309" target="_blank">31797309</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23809100">Diagnosis and management of optic nerve sheath meningiomas.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shapey J,
Sabin HI,
Danesh-Meyer HV,
Kaye AH</span><br />
<span class="medgenPMjournal">J Clin Neurosci</span>
2013 Aug;20(8):1045-56.
Epub 2013 Jun 25
doi: 10.1016/j.jocn.2013.03.008.
<span class="bold">PMID: </span><a href="/pubmed/23809100" target="_blank">23809100</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=(%22progressive%20visual%20loss%22%5Btiab%3A~0%5D)%20AND%20(%22english%20and%20humans%22%5BFilter%5D)%20AND%20(%20(%22practice%20guideline%22%5BFilter%5D)%20OR%20(practice*%5Btitl%5D%20AND%20(guideline%5Btitl%5D%20OR%20parameter%5Btitl%5D%20OR%20resource%5Btitl%5D%20OR%20bulletin%5Btitl%5D%20OR%20best%5Btitl%5D))%20OR%20(genetic*%5Btitl%5D%20AND%20(evaluation%5Btitl%5D%20OR%20counseling%5Btitl%5D%20OR%20screening%5Btitl%5D%20OR%20test*%5Btitl%5D))%20OR%20(clinical%5Btitl%5D%20AND%20((expert%5Btitl%5D%20AND%20consensus%5Btitl%5D)%20OR%20utility%5Btitl%5D%20OR%20guideline*%5Btitl%5D))%20OR%20(management%5Btitl%5D%20AND%20(clinical%5Btitl%5D%20OR%20diagnos*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20pain%5Btitl%5D%20OR%20surveillance%5Btitl%5D%20OR%20emergency%5Btitl%5D%20OR%20guideline*%5Btitl%5D%20OR%20therap*))%20OR%20(treatment%5Btitl%5D%20AND%20((evaluation%5Btitl%5D%20AND%20diagnosis%5Btitl%5D)%20OR%20(assessment%5Btitl%5D%20AND%20prevention%5Btitl%5D)%20OR%20therap*))%20OR%20(Diagnos*%5Btitl%5D%20AND%20(prenatal%5Btitl%5D%20OR%20treatment%5Btitl%5D%20OR%20follow-up%5Btitl%5D%20OR%20statement%5Btitl%5D%20OR%20criteria%5Btitl%5D%20OR%20newborn%5Btitl%5D%20OR%20differential%5Btitl%5D%20OR%20neonatal%5Btitl%5D%20OR%20neonate%5Btitl%5D))%20OR%20(guideline*%5Btitl%5D%20AND%20(pharmacogenetic*%5Btitl%5D%20OR%20recommendation%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20evidence-based%5Btitl%5D%20OR%20consensus%5Btitl%5D%20OR%20(technical%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20(molecular%5Btitl%5D%20AND%20testing%5Btitl%5D)))%20OR%20(risk%5Btitl%5D%20AND%20assessment%5Btitl%5D)%20OR%20(recommendation*%5Btitl%5D%20AND%20(statement%5Btitl%5D%20OR%20Evidence-based%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(care%20AND%20((Patient%5Btitl%5D%20AND%20standard*%5Btitl%5D)%20OR%20primary%5Btitl%5D%20OR%20psychosocial%5Btitl%5D))%20OR%20(Health%5Btitl%5D%20AND%20supervision%5Btitl%5D)%20OR%20(statement%5Btitl%5D%20AND%20(policy%5Btitl%5D%20OR%20position%5Btitl%5D%20OR%20Consensus%5Btitl%5D))%20OR%20(pharmacogenetics%5Btitl%5D%20AND%20(Dosing%5Btitl%5D%20OR%20therap*%5Btitl%5D%20OR%20genotype*%5Btitl%5D%20OR%20drug*%5Btitl%5D))%20OR%20(Chemotherapy%5Btitl%5D%20AND%20decision*%5Btitl%5D)%20OR%20(screening%5Btitl%5D%20AND%20(newborn%5Btitl%5D%20OR%20neonat*%5Btitl%5D%20OR%20detection%5Btitl%5D%20OR%20diagnos*%5Btitl%5D))%20OR%20(criteria%5Btitl%5D%20OR%20genotype*%5Btitl%5D)%20)%20NOT%20(%22Case%20reports%22%5BPublication%20type%5D%20OR%20%22clinical%20study%22%5BPublication%20Type%5D%20OR%20%22randomized%20controlled%20trial%22%5BPublication%20Type%5D)" title="PubMed search">See all (15)</a></div></div>
</div>
<div class="display-none help-popup" id="guidelinesHelpPM">These guidelines are articles in PubMed that match specific search criteria developed by MedGen to capture the most relevant practice guidelines. This list may not be comprehensive and may include broader topics as well. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div><div class="display-none help-popup" id="guidelinesHelpCurated">These guidelines are manually curated by the MedGen team
to supplement articles available in PubMed. See the <a href="/medgen/docs/faq/" title="Frequently asked questions" target="_blank">FAQ</a> for details.</div>
<div class="portlet mgSection" id="ID_103">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_clinical_studies">Recent clinical studies</h1><a sid="103" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><h3 class="subhead">Etiology</h3>
<div class="nl"><a target="_blank" href="/pubmed/38117686">Leber hereditary optic neuropathy gene therapy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Lam BL</span><br />
<span class="medgenPMjournal">Curr Opin Ophthalmol</span>
2024 May 1;35(3):244-251.
Epub 2023 Dec 20
doi: 10.1097/ICU.0000000000001028.
<span class="bold">PMID: </span><a href="/pubmed/38117686" target="_blank">38117686</a><a href="/pmc/articles/PMC10959684" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35597262">An eye for an eye, a tooth for a tooth.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pellegrini F,
Foroozan R</span><br />
<span class="medgenPMjournal">Surv Ophthalmol</span>
2023 Jul-Aug;68(4):809-814.
Epub 2022 May 18
doi: 10.1016/j.survophthal.2022.05.001.
<span class="bold">PMID: </span><a href="/pubmed/35597262" target="_blank">35597262</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25323828">Current treatments in familial dysautonomia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Palma JA,
Norcliffe-Kaufmann L,
Fuente-Mora C,
Percival L,
Mendoza-Santiesteban C,
Kaufmann H</span><br />
<span class="medgenPMjournal">Expert Opin Pharmacother</span>
2014 Dec;15(18):2653-71.
Epub 2014 Oct 17
doi: 10.1517/14656566.2014.970530.
<span class="bold">PMID: </span><a href="/pubmed/25323828" target="_blank">25323828</a><a href="/pmc/articles/PMC4236240" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17188044">Progressive visual loss in subfoveal exudation in age-related macular degeneration: a meta-analysis using Lineweaver-Burke plots.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shah AR,
Del Priore LV</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2007 Jan;143(1):83-89.
Epub 2006 Oct 20
doi: 10.1016/j.ajo.2006.09.043.
<span class="bold">PMID: </span><a href="/pubmed/17188044" target="_blank">17188044</a></div>
<div class="nl"><a target="_blank" href="/pubmed/15028127">Idiopathic intracranial hypertension.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Binder DK,
Horton JC,
Lawton MT,
McDermott MW</span><br />
<span class="medgenPMjournal">Neurosurgery</span>
2004 Mar;54(3):538-51; discussion 551-2.
doi: 10.1227/01.neu.0000109042.87246.3c.
<span class="bold">PMID: </span><a href="/pubmed/15028127" target="_blank">15028127</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20Etiology%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (138)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/38508214">RPE65-Associated Retinal Dystrophies: Phenotypes and Treatment Effects with Voretigene Neparvovec.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Stingl K,
Priglinger C,
Herrmann P</span><br />
<span class="medgenPMjournal">Klin Monbl Augenheilkd</span>
2024 Mar;241(3):259-265.
Epub 2024 Mar 20
doi: 10.1055/a-2227-3671.
<span class="bold">PMID: </span><a href="/pubmed/38508214" target="_blank">38508214</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35103000">Idiopathic Intracranial Hypertension - Challenges and Pearls.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Rohit W,
Rajesh A,
Mridula R,
Jabeen SA</span><br />
<span class="medgenPMjournal">Neurol India</span>
2021 Nov-Dec;69(Supplement):S434-S442.
doi: 10.4103/0028-3886.332276.
<span class="bold">PMID: </span><a href="/pubmed/35103000" target="_blank">35103000</a></div>
<div class="nl"><a target="_blank" href="/pubmed/30521818">Hide and seek.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Saint-Gerons M,
Muñoz S,
Bilyk JR</span><br />
<span class="medgenPMjournal">Surv Ophthalmol</span>
2020 Jan-Feb;65(1):109-115.
Epub 2018 Dec 3
doi: 10.1016/j.survophthal.2018.11.004.
<span class="bold">PMID: </span><a href="/pubmed/30521818" target="_blank">30521818</a></div>
<div class="nl"><a target="_blank" href="/pubmed/23809100">Diagnosis and management of optic nerve sheath meningiomas.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shapey J,
Sabin HI,
Danesh-Meyer HV,
Kaye AH</span><br />
<span class="medgenPMjournal">J Clin Neurosci</span>
2013 Aug;20(8):1045-56.
Epub 2013 Jun 25
doi: 10.1016/j.jocn.2013.03.008.
<span class="bold">PMID: </span><a href="/pubmed/23809100" target="_blank">23809100</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12427239">Methotrexate-induced optic neuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Balachandran C,
McCluskey PJ,
Champion GD,
Halmagyi GM</span><br />
<span class="medgenPMjournal">Clin Exp Ophthalmol</span>
2002 Dec;30(6):440-1.
doi: 10.1046/j.1442-9071.2002.00578.x.
<span class="bold">PMID: </span><a href="/pubmed/12427239" target="_blank">12427239</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20Diagnosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (308)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/25323828">Current treatments in familial dysautonomia.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Palma JA,
Norcliffe-Kaufmann L,
Fuente-Mora C,
Percival L,
Mendoza-Santiesteban C,
Kaufmann H</span><br />
<span class="medgenPMjournal">Expert Opin Pharmacother</span>
2014 Dec;15(18):2653-71.
Epub 2014 Oct 17
doi: 10.1517/14656566.2014.970530.
<span class="bold">PMID: </span><a href="/pubmed/25323828" target="_blank">25323828</a><a href="/pmc/articles/PMC4236240" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/18028240">Progressive visual loss and an optic disc tumour in a young man.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Al-Jamal RT,
Kivelä T</span><br />
<span class="medgenPMjournal">Acta Ophthalmol</span>
2008 May;86(3):341-3.
Epub 2007 Nov 19
doi: 10.1111/j.1600-0420.2007.01089.x.
<span class="bold">PMID: </span><a href="/pubmed/18028240" target="_blank">18028240</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17188044">Progressive visual loss in subfoveal exudation in age-related macular degeneration: a meta-analysis using Lineweaver-Burke plots.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shah AR,
Del Priore LV</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2007 Jan;143(1):83-89.
Epub 2006 Oct 20
doi: 10.1016/j.ajo.2006.09.043.
<span class="bold">PMID: </span><a href="/pubmed/17188044" target="_blank">17188044</a></div>
<div class="nl"><a target="_blank" href="/pubmed/14643921">The ocular ischemic syndrome.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Foncea Beti N,
Mateo I,
Díaz La Calle V,
Ruiz J,
Gomez Beldarrain M,
Garcia-Monco JC</span><br />
<span class="medgenPMjournal">Clin Neurol Neurosurg</span>
2003 Dec;106(1):60-2.
doi: 10.1016/j.clineuro.2003.09.001.
<span class="bold">PMID: </span><a href="/pubmed/14643921" target="_blank">14643921</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12427239">Methotrexate-induced optic neuropathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Balachandran C,
McCluskey PJ,
Champion GD,
Halmagyi GM</span><br />
<span class="medgenPMjournal">Clin Exp Ophthalmol</span>
2002 Dec;30(6):440-1.
doi: 10.1046/j.1442-9071.2002.00578.x.
<span class="bold">PMID: </span><a href="/pubmed/12427239" target="_blank">12427239</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20Therapy%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (101)</a></div><h3 class="subhead">Prognosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/25449930">Treatment options for atypical optic neuritis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Malik A,
Ahmed M,
Golnik K</span><br />
<span class="medgenPMjournal">Indian J Ophthalmol</span>
2014 Oct;62(10):982-4.
doi: 10.4103/0301-4738.145986.
<span class="bold">PMID: </span><a href="/pubmed/25449930" target="_blank">25449930</a><a href="/pmc/articles/PMC4278124" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/25027010">Optic nerve involvement of Waldenström's macroglobulinemia: with autopsy findings.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Nishida H,
Hashida R,
Hatano M,
Hori M,
Obara K</span><br />
<span class="medgenPMjournal">Neurol Sci</span>
2014 Aug;35(8):1299-302.
Epub 2014 Jul 17
doi: 10.1007/s10072-014-1865-7.
<span class="bold">PMID: </span><a href="/pubmed/25027010" target="_blank">25027010</a></div>
<div class="nl"><a target="_blank" href="/pubmed/24960831">Clinical reasoning: a 61-year-old woman with a swollen optic nerve and progressive visual loss.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Pecen PE,
Bhatti MT</span><br />
<span class="medgenPMjournal">Neurology</span>
2014 Jun 10;82(23):e205-9.
doi: 10.1212/WNL.0000000000000504.
<span class="bold">PMID: </span><a href="/pubmed/24960831" target="_blank">24960831</a></div>
<div class="nl"><a target="_blank" href="/pubmed/17188044">Progressive visual loss in subfoveal exudation in age-related macular degeneration: a meta-analysis using Lineweaver-Burke plots.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Shah AR,
Del Priore LV</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2007 Jan;143(1):83-89.
Epub 2006 Oct 20
doi: 10.1016/j.ajo.2006.09.043.
<span class="bold">PMID: </span><a href="/pubmed/17188044" target="_blank">17188044</a></div>
<div class="nl"><a target="_blank" href="/pubmed/15028127">Idiopathic intracranial hypertension.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Binder DK,
Horton JC,
Lawton MT,
McDermott MW</span><br />
<span class="medgenPMjournal">Neurosurgery</span>
2004 Mar;54(3):538-51; discussion 551-2.
doi: 10.1227/01.neu.0000109042.87246.3c.
<span class="bold">PMID: </span><a href="/pubmed/15028127" target="_blank">15028127</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20Prognosis%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (110)</a></div><h3 class="subhead">Clinical prediction guides</h3>
<div class="nl"><a target="_blank" href="/pubmed/36847628">Efficacy of Optic Nerve Sheath Fenestration in Patients with Increased Intracranial Pressure.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Özcan SC,
Deveci N,
Özarslan Özcan D,
Önder F</span><br />
<span class="medgenPMjournal">Turk J Ophthalmol</span>
2023 Feb 24;53(1):13-17.
doi: 10.4274/tjo.galenos.2022.45057.
<span class="bold">PMID: </span><a href="/pubmed/36847628" target="_blank">36847628</a><a href="/pmc/articles/PMC9973215" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/35562551">Visual outcomes and predictors in optic pathway glioma: a single centre study.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bowman R,
Walters B,
Smith V,
Prise KL,
Handley SE,
Green K,
Mankad K,
O'Hare P,
Dahl C,
Jorgensen M,
Opocher E,
Hargrave D,
Thompson DA</span><br />
<span class="medgenPMjournal">Eye (Lond)</span>
2023 Apr;37(6):1178-1183.
Epub 2022 May 13
doi: 10.1038/s41433-022-02096-1.
<span class="bold">PMID: </span><a href="/pubmed/35562551" target="_blank">35562551</a><a href="/pmc/articles/PMC10101957" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/12874770">Invasive thymoma with paraneoplastic retinopathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yamada G,
Ohguro H,
Aketa K,
Itoh T,
Shijubo N,
Takahashi H,
Fujiwara O,
Satoh M,
Ohtsuka K,
Abe S</span><br />
<span class="medgenPMjournal">Hum Pathol</span>
2003 Jul;34(7):717-9.
doi: 10.1016/s0046-8177(03)00183-7.
<span class="bold">PMID: </span><a href="/pubmed/12874770" target="_blank">12874770</a></div>
<div class="nl"><a target="_blank" href="/pubmed/11589893">Leber hereditary optic neuropathy, progressive visual loss, and multiple-sclerosis-like symptoms.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Tran M,
Bhargava R,
MacDonald IM</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2001 Oct;132(4):591-3.
doi: 10.1016/s0002-9394(01)01045-5.
<span class="bold">PMID: </span><a href="/pubmed/11589893" target="_blank">11589893</a></div>
<div class="nl"><a target="_blank" href="/pubmed/9479302">Endogenous cryptococcal endophthalmitis.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Sheu SJ,
Chen YC,
Kuo NW,
Wang JH,
Chen CJ</span><br />
<span class="medgenPMjournal">Ophthalmology</span>
1998 Feb;105(2):377-81.
doi: 10.1016/s0161-6420(98)93679-x.
<span class="bold">PMID: </span><a href="/pubmed/9479302" target="_blank">9479302</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20Clinical%20prediction%20guides%2Fbroad%5Bfilter%5D%20%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (70)</a></div></div>
</div>
<div class="portlet mgSection" id="ID_104">
<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Recent_systematic_reviews">Recent systematic reviews</h1><a sid="104" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln">
<div class="nl"><a target="_blank" href="/pubmed/23247038">Primary diffuse leptomeningeal gliomatosis in children: a clinical pathologic correlation.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Bernardini FP,
Croxatto JO,
Nozza P,
Rossi A,
Capris P</span><br />
<span class="medgenPMjournal">Ophthalmic Plast Reconstr Surg</span>
2013 Mar-Apr;29(2):93-7.
doi: 10.1097/IOP.0b013e318279fe23.
<span class="bold">PMID: </span><a href="/pubmed/23247038" target="_blank">23247038</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Progressive%20visual%20loss%22%20AND%20systematic%5Bsb%5D%20AND%20%22english%20and%20humans%22%5Bfilter%5D%20NOT%20comment%5BPTYP%5D%20NOT%20letter%5BPTYP%5D" title="PubMed search">See all (1)</a></div></div>
</div>
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<h2 class="offscreen_noflow">Supplemental Content</h2>
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<div class="portlet_head mgSectionHead ui-widget-header"><h1 class="nl" id="Table_of_contents">Table of contents</h1><a sid="113" href="#" class="portlet_shutter" title="Show/hide content"></a></div>
<div class="portlet_content ln"><ul id="my-toc"></ul></div>
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<div class="portlet_content ln"><ul><li><a href="/gtr/tests?term=C1839364%5bDISCUI%5d&amp;filter=method%3A2%5F8" target="_blank">Deletion/duplication analysis (7)</a></li>
<li><a href="/gtr/tests?term=C1839364%5bDISCUI%5d&amp;filter=method%3A2%5F7" target="_blank">Sequence analysis of the entire coding region (7)</a></li>
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