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</div><div><span>Cloudy cornea</span></div></div>
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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Cloudy cornea</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>A cloudy cornea is a loss of transparency of the cornea.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>The cornea is the front wall of the eye. It is normally clear. It helps focus the light entering the eye.</p><p>Causes of cloudy cornea include:</p><ul><li>Inflammation</li><li>Sensitivity to non-infectious bacteria or toxins</li><li>Infection</li><li>Keratitis</li><li>Trachoma</li><li>River blindness</li><li>Corneal ulcers</li><li>Swelling (edema)</li><li>Acute glaucoma</li><li>Birth injury</li><li>Fuchs dystrophy</li><li>Dryness of the eye due to Sjögren syndrome, vitamin A deficiency, or LASIK eye surgery</li><li>Corneal dystrophy (inherited metabolic disease)</li><li>Keratoconus</li><li>Injury to the eye, including chemical burns and welding injury</li><li>Tumors or growths on the eye</li><li>Pterygium</li><li>Bowen disease </li></ul><p>Clouding may affect all or part of the cornea. It leads to different amounts of <a test="test" href="./003040.htm">vision loss</a>. You may not have any symptoms in the early stages.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Home Care</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>Contact your health care provider. There is no appropriate home care.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>Contact your provider if:</p><ul><li>The outer surface of your eye appears cloudy.</li><li>You have trouble with your vision.</li></ul><p>Note: You will need to see an ophthalmologist for vision or eye problems. However, your primary care provider may also be involved if the problem could be due to a whole-body (systemic) disease.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>What to Expect at Your Office Visit</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>The provider will examine your eyes and ask about your medical history. The two main questions will be if your vision is affected and if you have seen a spot on the front of your eye.</p><p>Other questions may include:</p><ul><li>When did you first notice this?</li><li>Does it affect both eyes?</li><li>Do you have trouble with your vision?</li><li>Is it constant or intermittent?</li><li>Do you wear contact lenses?</li><li>Is there any history of injury to the eye?</li><li>Has there been any discomfort? If so, is there anything that helps?</li></ul><p>Tests may include:</p><ul><li>Biopsy of lid tissue</li><li>Computer mapping of the cornea (corneal topography)</li><li>Schirmer's test for eye dryness</li><li>Special photographs to measure the cells of the cornea</li><li><a test="test" href="./003434.htm">Standard eye exam</a></li><li><a test="test" href="./003336.htm">Ultrasound</a> to measure corneal thickness </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Corneal opacification; Corneal scarring; Corneal edema</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/1094t.jpg" alt="Eye" title="Eye" class="side-img"/><a href="../imagepages/1094.htm">Eye</a></li>
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/9197t.jpg" alt="Cloudy cornea" title="Cloudy cornea" class="side-img"/><a href="../imagepages/9197.htm">Cloudy cornea</a></li>
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</ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Cioffi GA, Liebmann JM. Diseases of the visual system. In: Goldman L, Schafer AI, eds. <em>Goldman-Cecil Medicine</em>. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 395.</p><p>Goncalves De Pinho AR. <em>Corneal tissue engineering: new applications for corneal stromal stem cells</em> (Doctoral dissertation, UCL (University College London)). <a href="https://discovery.ucl.ac.uk/id/eprint/10127500/1/PhD_FinalThesis_AnaRitaPinho.pdf" target="_blank">discovery.ucl.ac.uk/id/eprint/10127500/1/PhD_FinalThesis_AnaRitaPinho.pdf</a>. Published December 2020. Accessed November 4, 2022.</p><p>Guluma K, Lee JE. Ophthalmology. In: Walls RM, ed. <em>Rosen's Emergency Medicine: Concepts and Clinical Practice</em>. 10th ed. Philadelphia, PA: Elsevier; 2023:chap 57.</p><p>Kane JS, Kane SA. Cloudy corneas, plus. <em>J Pediatr Ophthalmol Strabismus</em>. 2022;59(2):73. PMID: 35343823 <a href="https://pubmed.ncbi.nlm.nih.gov/35343823/" target="_blank">pubmed.ncbi.nlm.nih.gov/35343823/</a>.</p><p>Kataguiri P, Kenyon KR, Batta P, Wadia HP, Sugar J. Corneal and external eye manifestations of systemic disease. In: Yanoff M, Duker JS, eds. <em>Ophthalmology</em>. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 4.25.</p><p>Lisch W, Weiss JS. Early and late clinical landmarks of corneal dystrophies. <em>Exp Eye Res</em>. 2020;198:108139. PMID: 32726603 <a href="https://pubmed.ncbi.nlm.nih.gov/32726603/" target="_blank">pubmed.ncbi.nlm.nih.gov/32726603/</a>.</p><p>Patel SS, Goldstein DA. Episcleritis and scleritis. In: Yanoff M, Duker JS, eds. <em>Ophthalmology</em>. 5th ed. Philadelphia, PA: Elsevier; 2019:chap 4.11.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 8/22/2022</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Franklin W. Lusby, MD, Ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.</p>
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</div></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Related MedlinePlus Health Topics</h2></div><div class="section-button"><button type="submit" aria-controls="section-mtp" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div name="Related MedlinePlus Health Topics" class="section-body" id="section-mtp"><ul class="side-nav"><li><a href="https://medlineplus.gov/cornealdisorders.html">Corneal Disorders</a></li>
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