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<meta name="keywords" content="C1839025, decreased amplitudes on flash visual electroretinogram, decreased electroretinogram, decreased electroretinogram amplitude, decreased electroretinogram response, decreased erg amplitude, decreased light- and dark-adapted electroretinogram amplitude, finding, flattened or absent electroretinogram, reduced electroretinogram, reduced electroretinogram (erg), reduced erg, reduced or abolished electroretinogram, 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="Decreased amplitude of eletrical response upon electroretinography." /><meta name="robots" content="index,nofollow,noarchive" />
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<title>Decreased light- and dark-adapted electroretinogram amplitude (Concept Id: C1839025)
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<!--
UID=326793
ConceptID=C1839025
-->
<!--imgCountBooks = 0--><h1 class="medgenTitle"><div class="MedGenTitleText">Decreased light- and dark-adapted electroretinogram amplitude</div></h1><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>326793</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."><span class="highlight" style="background-color:">C1839025</span></a></dd><dt><span class="dotprefix"></span></dt><dd>Finding</dd></dl></div></div><table class="medgenTable"><tbody><tr><td>Synonyms:</td>
<td>Decreased amplitudes on flash visual electroretinogram; Decreased electroretinogram response; Reduced electroretinogram (ERG); Reduced ERG</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:0000654">HP:0000654</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">Decreased amplitude of eletrical response upon electroretinography. [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=C1839025[DISCUI]&amp;test_type=Clinical&amp;redirect=true" ref="ncbi_uid=326793">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=326793" ref="ncbi_uid=326793">V</a></span></span><span class="TLline">Decreased light- and dark-adapted electroretinogram amplitude</span></li></ul></div></div></div></div></div><div id="tabMGEN"><div class="ds_tree"><ul><li><span class="TLline"><a href="/medgen/1370071" ref="tree=MeSH" title="MedGen record for Abnormality of the eye">Abnormality of the eye</a></span><ul><li><span class="TLline"><a href="/medgen/868525" ref="tree=MeSH" title="MedGen record for Abnormal eye physiology">Abnormal eye physiology</a></span><ul><li><span class="TLline"><a href="/medgen/892656" ref="tree=MeSH" title="MedGen record for Abnormal visual electrophysiology">Abnormal visual electrophysiology</a></span><ul><li><span class="TLline"><a href="/medgen/96908" ref="tree=MeSH" title="MedGen record for Abnormal electroretinogram">Abnormal electroretinogram</a></span><ul><li><span class="TLline"><a href="/medgen/892525" ref="tree=MeSH" title="MedGen record for Abnormal full-field electroretinogram">Abnormal full-field electroretinogram</a></span><ul><li><span class="TLline"><a href="/medgen/462461" ref="tree=MeSH" title="MedGen record for Abnormal light- and dark-adapted electroretinogram">Abnormal light- and dark-adapted electroretinogram</a></span><ul><li><span class="matched_ds">Decreased light- and dark-adapted electroretinogram amplitude</span></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_68663"><div><strong>Mucolipidosis type IV</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>68663</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.">C0238286</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Mucolipidosis IV (MLIV) is an ultra-rare lysosomal storage disorder characterized by severe psychomotor delay, progressive visual impairment, and achlorhydria. Individuals with MLIV typically present by the end of the first year of life with delayed developmental milestones (due to a developmental brain abnormality) and impaired vision (resulting from a combination of corneal clouding and retinal degeneration). By adolescence, all individuals with MLIV have severe visual impairment. A neurodegenerative component of MLIV has become more widely appreciated, with the majority of individuals demonstrating progressive spastic quadriparesis and loss of psychomotor skills starting in the second decade of life. About 5% of individuals have atypical MLIV, manifesting with less severe psychomotor impairment, but still exhibiting progressive retinal degeneration and achlorhydria.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/68663">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_322026"><div><strong>ALG3-congenital disorder of glycosylation</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>322026</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.">C1832736</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Congenital disorders of glycosylation (CDGs) are a genetically heterogeneous group of autosomal recessive disorders caused by enzymatic defects in the synthesis and processing of asparagine (N)-linked glycans or oligosaccharides on glycoproteins. Type I CDGs comprise defects in the assembly of the dolichol lipid-linked oligosaccharide (LLO) chain and its transfer to the nascent protein. These disorders can be identified by a characteristic abnormal isoelectric focusing profile of plasma transferrin (Leroy, 2006).&#13; CDG1D is a type I CDG that generally presents with severe neurologic involvement associated with dysmorphism and visual impairment. Liver involvement is sometimes present (summary by Marques-da-Silva et al., 2017).&#13; For a discussion of the classification of CDGs, see CDG1A (212065).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/322026">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_373284"><div><strong>Muscular dystrophy-dystroglycanopathy type B6</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>373284</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.">C1837229</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">MDDGB6 is an autosomal recessive congenital muscular dystrophy with impaired intellectual development and structural brain abnormalities (Longman et al., 2003). It is part of a group of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as 'dystroglycanopathies' (Mercuri et al., 2009).&#13; For a discussion of genetic heterogeneity of congenital muscular dystrophy-dystroglycanopathy type B, see MDDGB1 (613155).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/373284">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_374113"><div><strong>Striatonigral degeneration, infantile, mitochondrial</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>374113</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.">C1839022</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/374113">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_376636"><div><strong>Acyl-CoA oxidase deficiency</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>376636</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.">C1849678</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Peroxisomal acyl-CoA oxidase deficiency is a disorder of peroxisomal fatty acid beta-oxidation. See also D-bifunctional protein deficiency (261515), caused by mutation in the HSD17B4 gene (601860) on chromosome 5q2. The clinical manifestations of these 2 deficiencies are similar to those of disorders of peroxisomal assembly, including Zellweger cerebrohepatorenal syndrome (see 214100) and neonatal adrenoleukodystrophy (see 601539) (Watkins et al., 1995).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/376636">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_355852"><div><strong>Congenital stationary night blindness autosomal dominant 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>355852</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.">C1864869</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any congenital stationary night blindness in which the cause of the disease is a mutation in the RHO gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/355852">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_382614"><div><strong>Retinitis pigmentosa 46</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>382614</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.">C2675496</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinitis pigmentosa-46 (RP46) is characterized by night blindness, loss of peripheral vision, and reduced visual acuity. Funduscopic findings are typical of RP, including pale optic discs, attenuated retinal vessels, and intraretinal pigment deposits. Electroretinography shows substantial loss of rod and cone photoreceptor function (Hartong et al., 2008).&#13; For a discussion of genetic heterogeneity of retinitis pigmentosa, see 268000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/382614">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_442375"><div><strong>Leber congenital amaurosis 14</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>442375</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.">C2750063</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Autosomal recessive childhood-onset severe retinal dystrophy is a heterogeneous group of disorders affecting rod and cone photoreceptors simultaneously. The most severe cases are termed Leber congenital amaurosis, whereas the less aggressive forms are usually considered juvenile retinitis pigmentosa (Gu et al., 1997).&#13; For a general phenotypic description and a discussion of genetic heterogeneity of Leber congenital amaurosis, see LCA1 (204000); for retinitis pigmentosa, see 268000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/442375">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_419026"><div><strong>Leber congenital amaurosis 1</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>419026</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.">C2931258</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leber congenital amaurosis, also known as LCA, is an eye disorder that is present from birth (congenital). This condition primarily affects the retina, which is the specialized tissue at the back of the eye that detects light and color. People with this disorder typically have severe visual impairment beginning at birth or shortly afterward. The visual impairment tends to be severe and may worsen over time.\n\nLeber congenital amaurosis is also associated with other vision problems, including an increased sensitivity to light (photophobia), involuntary movements of the eyes (nystagmus), and extreme farsightedness (hyperopia). The pupils, which usually expand and contract in response to the amount of light entering the eye, do not react normally to light. Instead, they expand and contract more slowly than normal, or they may not respond to light at all.\n\nA specific behavior called Franceschetti's oculo-digital sign is characteristic of Leber congenital amaurosis. This sign consists of affected individuals poking, pressing, and rubbing their eyes with a knuckle or finger. Poking their eyes often results in the sensation of flashes of light called phosphenes. Researchers suspect that this behavior may contribute to deep-set eyes in affected children.\n\nIn very rare cases, delayed development and intellectual disability have been reported in people with the features of Leber congenital amaurosis. Because of the visual loss, affected children may become isolated. Providing children with opportunities to play, hear, touch, understand and other early educational interventions may prevent developmental delays in children with Leber congenital amaurosis.\n\nAt least 20 genetic types of Leber congenital amaurosis have been described. The types are distinguished by their genetic cause, patterns of vision loss, and related eye abnormalities.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/419026">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462411"><div><strong>Retinitis pigmentosa 47</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462411</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.">C3151061</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Retinitis pigmentosa-47 (RP47) is characterized by relatively late-onset visual decline, although most patients experience night blindness in childhood. A characteristic golden sheen, considered to be pathognomonic for Oguchi disease (258100), may be observed in the periphery on ultra-widefield fundus images (Nishiguchi et al., 2019).&#13; For a phenotypic description and a discussion of genetic heterogeneity of retinitis pigmentosa, see 268000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462411">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462418"><div><strong>Retinitis pigmentosa 44</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462418</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.">C3151068</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Any retinitis pigmentosa in which the cause of the disease is a mutation in the RGR gene.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462418">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_462869"><div><strong>Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A3</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>462869</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.">C3151519</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">An autosomal recessive muscular dystrophy caused by mutations in the POMGNT1 gene. It is associated with characteristic brain and eye malformations, profound mental retardation, and death usually in the first years of life.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/462869">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_463611"><div><strong>X-linked cone dysfunction syndrome with myopia</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>463611</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.">C3159311</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bornholm eye disease consists of X-linked high myopia, amblyopia, and deuteranopia. Associated signs include optic nerve hypoplasia, reduced electroretinographic (ERG) flicker, and nonspecific retinal pigment abnormalities (Schwartz et al., 1990).</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/463611">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_854806"><div><strong>Autosomal recessive bestrophinopathy</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>854806</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.">C3888198</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Bestrophinopathies, the spectrum of ophthalmic disorders caused by pathogenic variants in BEST1, are typically characterized by retinal degeneration. The four recognized phenotypes are the three autosomal dominant disorders: Best vitelliform macular dystrophy (BVMD), BEST1 adult-onset vitelliform macular dystrophy (AVMD), and autosomal dominant vitreoretinochoroidopathy (ADVIRC); and autosomal recessive bestrophinopathy (ARB). Onset is usually in the first decade (except AVMD in which onset is age 30 to 50 years). Slow visual deterioration is the usual course. Choroidal neovascularization can occur in rare cases. ADVIRC is also associated with panophthalmic involvement including nanophthalmos, microcornea, hyperopia, and narrow anterior chamber angle with angle closure glaucoma.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/854806">Condition Record</a></div></div>
<div class="divPopper rprt" id="rdis_1679297"><div><strong>Leber congenital amaurosis 19</strong><div class="aux"><div class="resc"><dl class="rprtid"><dt>MedGen UID: </dt><dd>1679297</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.">C5193139</a></dd><dt><span class="dotprefix"></span></dt><dd>Disease or Syndrome</dd></dl></div></div></div>
<div class="spaceAbove">Leber congenital amaurosis-19 (LCA19) is characterized by reduced vision in early childhood and severely reduced responses of both rods and cones on electroretinography (Yi et al., 2019).&#13; For a general description and a discussion of genetic heterogeneity of LCA, see 204000.</div>
<div class="spaceAbove nowrap">See: <a href="/medgen/1679297">Condition Record</a></div></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_376636" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Acyl-CoA oxidase deficiency</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_322026" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">ALG3-congenital disorder of glycosylation</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_854806" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Autosomal recessive bestrophinopathy</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_355852" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Congenital stationary night blindness autosomal dominant 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_419026" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 1</a></div><div class="jig-moreless" data-jigconfig="class: 'moveDown', moreText: 'See full list (17)', lessText: 'Show less', nodeBefore: 0"><span id="clinMore">
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_442375" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 14</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_1679297" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Leber congenital amaurosis 19</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_68663" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Mucolipidosis type IV</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462869" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A3</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_373284" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Muscular dystrophy-dystroglycanopathy type B6</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_340540" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 1</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_332304" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Neuronal ceroid lipofuscinosis 9</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462418" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Retinitis pigmentosa 44</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_382614" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Retinitis pigmentosa 46</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_462411" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Retinitis pigmentosa 47</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_374113" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">Striatonigral degeneration, infantile, mitochondrial</a></div>
<div class="hangingIndent"><a title="click for more information" class="jig-ncbipopper" href="#rdis_463611" data-jigconfig="hasArrow: true, openEvent: 'click', closeEvent: 'mouseout', openAnimation: 'fadeIn', closeAnimation: 'fadeOut', triggerPosition: 'center right', destPosition: 'center left', arrowDirection: 'left'">X-linked cone dysfunction syndrome with myopia</a></div></span></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/37221823">Electrophysiological effects of hyperbaric oxygen treatment on the healthy retina.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Demir N,
Kayhan B,
Sumen SG,
Sonmez M,
Tukenmez Dikmen N</span><br />
<span class="medgenPMjournal">Cutan Ocul Toxicol</span>
2023 Sep;42(3):103-108.
Epub 2023 Jun 1
doi: 10.1080/15569527.2023.2217250.
<span class="bold">PMID: </span><a href="/pubmed/37221823" target="_blank">37221823</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36399172">Electroretinogram abnormalities in FKRP-related limb-girdle muscular dystrophy (LGMDR9).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hagedorn JL,
Dunn TM,
Bhattarai S,
Stephan C,
Mathews KD,
Pfeifer W,
Drack AV</span><br />
<span class="medgenPMjournal">Doc Ophthalmol</span>
2023 Feb;146(1):7-16.
Epub 2022 Nov 18
doi: 10.1007/s10633-022-09909-4.
<span class="bold">PMID: </span><a href="/pubmed/36399172" target="_blank">36399172</a><a href="/pmc/articles/PMC11171413" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34586967">Optical Coherence Tomography Angiography in Patients with Cone Dystrophy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yilmaz AC,
Durukan AH,
Yilmaz H,
Karaca U</span><br />
<span class="medgenPMjournal">Semin Ophthalmol</span>
2022 May 19;37(4):485-490.
Epub 2021 Sep 29
doi: 10.1080/08820538.2021.1985527.
<span class="bold">PMID: </span><a href="/pubmed/34586967" target="_blank">34586967</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33226538">Continuous wavelet transform analysis of ERG in patients with diabetic retinopathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ahmadieh H,
Behbahani S,
Safi S</span><br />
<span class="medgenPMjournal">Doc Ophthalmol</span>
2021 Jun;142(3):305-314.
Epub 2020 Nov 23
doi: 10.1007/s10633-020-09805-9.
<span class="bold">PMID: </span><a href="/pubmed/33226538" target="_blank">33226538</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29702075">Longitudinal Study of Visual Function in Vogt-Koyanagi-Harada Disease Using Full-Field Electroretinography.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yuan W,
Zhou C,
Cao Q,
Du Z,
Hu R,
Wang Y,
Kijlstra A,
Yang P</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2018 Jul;191:92-99.
Epub 2018 Apr 25
doi: 10.1016/j.ajo.2018.04.013.
<span class="bold">PMID: </span><a href="/pubmed/29702075" target="_blank">29702075</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Decreased%20light-%20and%20dark-adapted%20electroretinogram%20amplitude%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 (23)</a></div><h3 class="subhead">Diagnosis</h3>
<div class="nl"><a target="_blank" href="/pubmed/37221823">Electrophysiological effects of hyperbaric oxygen treatment on the healthy retina.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Demir N,
Kayhan B,
Sumen SG,
Sonmez M,
Tukenmez Dikmen N</span><br />
<span class="medgenPMjournal">Cutan Ocul Toxicol</span>
2023 Sep;42(3):103-108.
Epub 2023 Jun 1
doi: 10.1080/15569527.2023.2217250.
<span class="bold">PMID: </span><a href="/pubmed/37221823" target="_blank">37221823</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36399172">Electroretinogram abnormalities in FKRP-related limb-girdle muscular dystrophy (LGMDR9).</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Hagedorn JL,
Dunn TM,
Bhattarai S,
Stephan C,
Mathews KD,
Pfeifer W,
Drack AV</span><br />
<span class="medgenPMjournal">Doc Ophthalmol</span>
2023 Feb;146(1):7-16.
Epub 2022 Nov 18
doi: 10.1007/s10633-022-09909-4.
<span class="bold">PMID: </span><a href="/pubmed/36399172" target="_blank">36399172</a><a href="/pmc/articles/PMC11171413" target="_blank" class="PubMedFree">Free PMC Article</a></div>
<div class="nl"><a target="_blank" href="/pubmed/34507226">Complete evaluation of retinal function in Major Depressive Disorder: From central slowdown to hyperactive periphery.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Cosker E,
Moulard M,
Baumann C,
Luc A,
Angioi-Duprez K,
Laprévote V,
Schwan R,
Schwitzer T</span><br />
<span class="medgenPMjournal">J Affect Disord</span>
2021 Dec 1;295:453-462.
Epub 2021 Aug 27
doi: 10.1016/j.jad.2021.08.054.
<span class="bold">PMID: </span><a href="/pubmed/34507226" target="_blank">34507226</a></div>
<div class="nl"><a target="_blank" href="/pubmed/33226538">Continuous wavelet transform analysis of ERG in patients with diabetic retinopathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Ahmadieh H,
Behbahani S,
Safi S</span><br />
<span class="medgenPMjournal">Doc Ophthalmol</span>
2021 Jun;142(3):305-314.
Epub 2020 Nov 23
doi: 10.1007/s10633-020-09805-9.
<span class="bold">PMID: </span><a href="/pubmed/33226538" target="_blank">33226538</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29702075">Longitudinal Study of Visual Function in Vogt-Koyanagi-Harada Disease Using Full-Field Electroretinography.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Yuan W,
Zhou C,
Cao Q,
Du Z,
Hu R,
Wang Y,
Kijlstra A,
Yang P</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2018 Jul;191:92-99.
Epub 2018 Apr 25
doi: 10.1016/j.ajo.2018.04.013.
<span class="bold">PMID: </span><a href="/pubmed/29702075" target="_blank">29702075</a></div>
<div><a target="_blank" href="https://pubmed.ncbi.nlm.nih.gov/?term=%22Decreased%20light-%20and%20dark-adapted%20electroretinogram%20amplitude%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 (17)</a></div><h3 class="subhead">Therapy</h3>
<div class="nl"><a target="_blank" href="/pubmed/37221823">Electrophysiological effects of hyperbaric oxygen treatment on the healthy retina.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Demir N,
Kayhan B,
Sumen SG,
Sonmez M,
Tukenmez Dikmen N</span><br />
<span class="medgenPMjournal">Cutan Ocul Toxicol</span>
2023 Sep;42(3):103-108.
Epub 2023 Jun 1
doi: 10.1080/15569527.2023.2217250.
<span class="bold">PMID: </span><a href="/pubmed/37221823" target="_blank">37221823</a></div>
<div class="nl"><a target="_blank" href="/pubmed/36070046">Comparison of functional changes of retina after subthreshold and threshold pan-retinal photocoagulation in severe non-proliferative diabetic retinopathy.</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Zhao H,
Zhou L,
Lai K,
Yu M,
Huang C,
Xu F,
Li C,
Lu L,
Jin C</span><br />
<span class="medgenPMjournal">Lasers Med Sci</span>
2022 Dec;37(9):3561-3569.
Epub 2022 Sep 7
doi: 10.1007/s10103-022-03635-8.
<span class="bold">PMID: </span><a href="/pubmed/36070046" target="_blank">36070046</a></div>
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Milani P,
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Yu M,
Lu L,
Jin C,
Luo G</span><br />
<span class="medgenPMjournal">Lasers Med Sci</span>
2018 Jul;33(5):1095-1102.
Epub 2018 Mar 15
doi: 10.1007/s10103-018-2474-0.
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Fujisawa T,
Tsuruma K,
Tozuka Y,
Shimazawa M,
Takeuchi H,
Hara H</span><br />
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2011 Sep 21;52(10):7289-97.
doi: 10.1167/iovs.11-7983.
<span class="bold">PMID: </span><a href="/pubmed/21849425" target="_blank">21849425</a></div>
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<div class="nl"><a target="_blank" href="/pubmed/34491492">Subclinical maculopathy and retinopathy in transcobalamin deficiency: a 10-year follow-up.</a></div>
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Nasser H,
Delouvrier E,
Milani P,
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2022 Feb;144(1):53-65.
Epub 2021 Sep 7
doi: 10.1007/s10633-021-09849-5.
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<div class="nl"><a target="_blank" href="/pubmed/32275357">Full-field Electroretinography in Age-related Macular Degeneration: can retinal electrophysiology predict the subjective visual outcome of cataract surgery?</a></div>
<div class="portlet_content ln"><span class="medgenPMauthor">Forshaw TRJ,
Ahmed HJ,
Kjaer TW,
Andréasson S,
Sørensen TL</span><br />
<span class="medgenPMjournal">Acta Ophthalmol</span>
2020 Nov;98(7):693-700.
Epub 2020 Apr 10
doi: 10.1111/aos.14430.
<span class="bold">PMID: </span><a href="/pubmed/32275357" target="_blank">32275357</a></div>
<div class="nl"><a target="_blank" href="/pubmed/29702075">Longitudinal Study of Visual Function in Vogt-Koyanagi-Harada Disease Using Full-Field Electroretinography.</a></div>
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Zhou C,
Cao Q,
Du Z,
Hu R,
Wang Y,
Kijlstra A,
Yang P</span><br />
<span class="medgenPMjournal">Am J Ophthalmol</span>
2018 Jul;191:92-99.
Epub 2018 Apr 25
doi: 10.1016/j.ajo.2018.04.013.
<span class="bold">PMID: </span><a href="/pubmed/29702075" target="_blank">29702075</a></div>
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<span class="medgenPMjournal">Vision Res</span>
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Andrassi M,
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<span class="medgenPMjournal">Ophthalmic Genet</span>
2003 Jun;24(2):89-101.
doi: 10.1076/opge.24.2.89.14001.
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Moulard M,
Baumann C,
Luc A,
Angioi-Duprez K,
Laprévote V,
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<div class="portlet_content ln"><span class="medgenPMauthor">Hu Z,
Wang K,
Bertsch M,
Dunn T,
Kehoe T,
Kemerley AD,
Helms M,
Bhattarai S,
Pfeifer W,
Scheetz TE,
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<span class="medgenPMjournal">Doc Ophthalmol</span>
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doi: 10.1007/s10633-019-09692-9.
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Racine J,
Robert MP,
Cohen SY,
Merle BMJ,
Jung C,
Miere A,
Caillaux V,
Souied EH,
Zambrowski O</span><br />
<span class="medgenPMjournal">Invest Ophthalmol Vis Sci</span>
2017 Jun 1;58(7):3262-3267.
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Breithaupt M,
Hudemann J,
Niess A,
Messias A,
Zrenner E,
Bartz-Schmidt KU,
Gekeler F,
Willmann G</span><br />
<span class="medgenPMjournal">Graefes Arch Clin Exp Ophthalmol</span>
2014 Jan;252(1):43-50.
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