{"id":15096,"date":"2021-07-04T10:25:03","date_gmt":"2021-07-04T10:25:03","guid":{"rendered":"https:\/\/www.optometrists.org\/?page_id=15096"},"modified":"2022-02-13T16:00:54","modified_gmt":"2022-02-13T16:00:54","slug":"keratitis","status":"publish","type":"page","link":"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/keratitis\/","title":{"rendered":"Keratitis"},"content":{"rendered":"<h2><b>Keratitis is a serious corneal inflammation that affects the lives of up to over 70,000 people every year.\u00a0\u00a0<\/b><\/h2>\n<h2><b>What is keratitis?<\/b><\/h2>\n<p>Keratitis is a common inflammatory eye condition that affects the cornea, usually resulting in <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/corneal-ulcers-keratitis\/\">sight-threatening corneal ulcers<\/a>.<\/p>\n<p>The cornea is the clear part of the eye that covers both the iris and the pupil. Keratitis can be caused by an<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/eye-emergencies\/6-most-frequent-eye-injuries\/\"> injury to the eye<\/a> or an <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/guide-to-pediatric-eye-conditions\/a-guide-to-eye-infections\/\">eye infection.<\/a><\/p>\n<p>One population-based study in California estimated that 71,000 cases of severe microbial keratitis could occur per year in the USA.<\/p>\n<p>No matter what the cause of keratitis is, there are ways to reduce the risk of suffering the<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/corneal-ulcers-keratitis\/\"> serious consequences of corneal ulcerations<\/a>.<\/p>\n<h2><b>What are the symptoms of keratitis?<\/b><\/h2>\n<p><b>If you develop any of the following symptoms, contact an eye doctor near you immediately.<\/b><\/p>\n<p>Symptoms of keratitis include:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Excessive tearing<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Eye discharge<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Inability to open your eye<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Pain and irritation in the affected eye<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Red eyes<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Sensitivity to light<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Vision changes, such as blurriness or inability to see<\/li>\n<\/ul>\n<p>If left untreated, or if the infection is severe, keratitis can lead to serious complications that may permanently damage your vision.<\/p>\n<h2><b>Types of keratitis<\/b><\/h2>\n<p>Depending on the underlying cause, keratitis may be classified as either infectious or noninfectious.<\/p>\n<h3><b>Infectious keratitis<\/b><\/h3>\n<p>The different types of infection include:<\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Bacteria<\/b> &#8211; Staphylococcus aureus and Pseudomonas aeruginosa are the two most common types of bacteria that cause bacterial keratitis.<\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fungi<\/b> &#8211; Fungal keratitis is caused by Fusarium, Candida or Aspergillus. While it is common in those who wear contact lenses, it\u2019s also possible to be exposed to these fungi outdoors.<\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Parasites<\/b> &#8211; A parasite called Acanthamoeba lives outdoors and may be picked up by walking in a wooded area, swimming in a lake or infected tap water coming in contact with your contact lenses. This type of infection is called Acanthamoeba keratitis.<\/li>\n<\/ol>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Viruses<\/b> &#8211; Viral keratitis is primarily caused by the herpes simplex virus, which can progress from conjunctivitis to keratitis.<\/li>\n<\/ol>\n<h3><b>Noninfectious keratitis<\/b><\/h3>\n<p>Noninfectious keratitis is commonly caused by:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Wearing your contacts too many hours a day<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Using extended-wear contacts, especially past their expiration date<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Wearing your contacts while swimming<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Exposure to intense sunlight, called photo keratitis<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Eye injury, such as a scratch<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Weakened immune system<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Living in a warm climate, which increases the risk of plant materials damaging your cornea<\/li>\n<\/ul>\n<p><b>If you suspect you may have keratitis,<\/b><a href=\"https:\/\/www.optometrists.org\/practice-search\/\"> <b>contact an eye doctor near you.<\/b><\/a><\/p>\n<p><b>SEE RELATED:<\/b><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/corneal-ulcers-keratitis\/\"> <b>Corneal Ulcers<\/b><\/a><\/p>\n\n\t<div class=\"practice-search-widget\">\n\t\t<h3>Find an eye doctor near you<\/h3>\n\t\t\n\t<form class=\"practice-search-form practice-search-form-widget\" action=\"https:\/\/www.optometrists.org\/practice-search\/results\/\" method=\"get\">\n\n\t\t<input type=\"hidden\" name=\"distance\" value=\"100\" class=\"practice-search-distance\">\n\t\t<input type=\"hidden\" name=\"page\" class=\"practice-search-page\">\n\t\t<input type=\"hidden\" name=\"address_latitude\"><input type=\"hidden\" name=\"address_longitude\">\n\n\t\t<input type=\"text\" name=\"address\" class=\"practice-search-address\" placeholder=\"City, Surburb or Address\" value=\"\">\n\n\t\t\n\t\t\t<input type=\"hidden\" name=\"distance\" value=\"100\" class=\"practice-search-distance\">\n\n\t\t\n\n\t\t<button type=\"submit\" class=\"practice-search-button\">\n\t\t\t\t\t\t\t\t\t<svg width=\"19\" height=\"19\" viewBox=\"0 0 19 19\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M10.6796 0.130005C9.15708 0.130059 7.66615 0.5646 6.38198 1.38258C5.09781 2.20057 4.07373 3.36803 3.43004 4.74783C2.78634 6.12763 2.54976 7.66246 2.74808 9.17205C2.9464 10.6816 3.57139 12.1033 4.54964 13.27L0.729639 17.08C0.6364 17.1732 0.562439 17.2839 0.511979 17.4058C0.461519 17.5276 0.435547 17.6581 0.435547 17.79C0.435547 17.9219 0.461519 18.0524 0.511979 18.1743C0.562439 18.2961 0.6364 18.4068 0.729639 18.5C0.917942 18.6883 1.17334 18.7941 1.43964 18.7941C1.5715 18.7941 1.70207 18.7681 1.82389 18.7177C1.94571 18.6672 2.0564 18.5932 2.14964 18.5L5.99964 14.62C7.35406 15.6038 8.98566 16.1324 10.6596 16.13C12.7814 16.13 14.8162 15.2871 16.3165 13.7869C17.8168 12.2866 18.6596 10.2517 18.6596 8.13C18.6596 6.00827 17.8168 3.97344 16.3165 2.47315C14.8162 0.97286 12.7814 0.130005 10.6596 0.130005H10.6796ZM10.6796 14.13C9.49295 14.13 8.33291 13.7781 7.34622 13.1188C6.35952 12.4595 5.59049 11.5225 5.13636 10.4261C4.68224 9.32975 4.56342 8.12335 4.79493 6.95946C5.02644 5.79558 5.59788 4.72648 6.437 3.88736C7.27611 3.04825 8.34521 2.4768 9.5091 2.24529C10.673 2.01378 11.8794 2.1326 12.9757 2.58673C14.0721 3.04085 15.0092 3.80989 15.6685 4.79658C16.3277 5.78328 16.6796 6.94332 16.6796 8.13C16.6796 9.7213 16.0475 11.2474 14.9223 12.3726C13.7971 13.4979 12.2709 14.13 10.6796 14.13Z\" fill=\"#fff\"\/><\/svg>\n\t\t\t\t\t<\/button>\n\n\t\t<button type=\"button\" class=\"practice-search-use-my-location\">\n\t\t\tSearch near me\n\t\t<\/button>\n\n\n\t<\/form>\n\n\n\n\t\t<\/div>\n\n\t\n<h2><b>What is punctate keratitis?<\/b><\/h2>\n<p>Superficial punctate keratitis occurs when groups of cells on the corneal surface begin to die.<\/p>\n<p>It can develop from any of the following conditions:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">A viral or bacterial eye infection<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/dry-eye\/\">Dry eyes<\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Prolonged use of contact lenses<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">An allergy to eye drops<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/dry-eye\/eyelid-conditions\/do-i-have-blepharitis\/\">Blepharitis<\/a> (eyelid inflammation)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Chemicals in the eye<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">UV light exposure<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/eye-conditions\/do-i-have-bells-palsy\/\">Bell&#8217;s palsy<\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Side effect of certain medications<\/li>\n<\/ul>\n<p>Punctate keratitis is generally treated with medicated eye drops or ointments.<\/p>\n<h2><b>What is ulcerative keratitis?<\/b><\/h2>\n<p>Peripheral ulcerative keratitis is a serious eye disorder characterized by inflammation and ulceration of the cornea. It is often caused by an autoimmune disorder, such as rheumatoid arthritis, though it can also develop from an infection.<\/p>\n<p>For this type of keratitis, treatment generally involves medication to suppress the immune system along with direct treatment of the corneal ulcer.<\/p>\n<h2><b>Can contact lenses cause keratitis?<\/b><\/h2>\n<p><b>Yes.\u00a0<\/b><\/p>\n<p><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-contact-lenses\/why-is-contact-lenses-compliance-important\/\">Improper handling of contact lenses<\/a> is often the reason people develop infectious keratitis.<\/p>\n<p>Additionally, non-infectious keratitis often results from wearing expired contact lenses, or leaving your lenses in for too many hours each day. Wearing extended-wear contact lenses can also increase your risk of keratitis, as can wearing your contact lenses while showering or swimming.<\/p>\n<p>The incidence of microbial keratitis ranges from 0.4 to 5.2 per 10,000 person-years for rigid gas-permeable and soft contact lens wearers to &gt;20 per 10,000 person-years for overnight soft contact lens wearers.<\/p>\n<p>It is important to treat contact lens keratitis promptly, to reduce your risk of complications.<\/p>\n<h2><b>How is keratitis treated?<\/b><\/h2>\n<p>Treatment will depend on the underlying cause of your keratitis. Your doctor may prescribe oral medications, eye drops or both. These include:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Antibiotics for bacterial infections<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Antifungals for fungal infections<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Antivirals for viral infections<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Biocides for parasitic infections<\/li>\n<\/ul>\n<p>In rare cases, when keratitis doesn&#8217;t respond to medication, or if it<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/corneal-ulcers-keratitis\/\"> causes corneal ulcers<\/a> that can lead to permanent corneal damage and vision loss, your doctor may recommend a <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/corneal-transplant-keratoplasty\/\">corneal transplant.<\/a><\/p>\n<p><b>LEARN MORE: <\/b>\u00a0<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/guide-to-corneal-diseases\/\"><b>Guide to Corneal Diseases<\/b><\/a><\/p>\n<p><a href=\"https:\/\/www.optometrists.org\/practice-search\/\"><b>Schedule an urgent appointment<\/b><\/a> <strong>with an eye doctor near you who can diagnose and treat your keratitis.<\/strong><\/p>\n<p><i>Keratitis is a common inflammatory eye condition that affects the cornea, usually resulting in sight-threatening corneal ulcers.<\/i><\/p>\n<p><i>No matter what the cause of keratitis is, there are ways to reduce the risk of suffering the serious consequences of corneal damage.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Keratitis is a serious corneal inflammation that affects the lives of up to over 70,000 people every year.\u00a0\u00a0 What is keratitis? 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