{"id":6877,"date":"2020-07-07T18:22:35","date_gmt":"2020-07-07T18:22:35","guid":{"rendered":"https:\/\/www.optometrists.org\/?page_id=6877"},"modified":"2021-07-19T13:19:22","modified_gmt":"2021-07-19T13:19:22","slug":"what-is-angle-closure-glaucoma","status":"publish","type":"page","link":"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-conditions\/glaucoma-guide\/glaucoma-faqs\/what-is-angle-closure-glaucoma\/","title":{"rendered":"What Is Angle Closure Glaucoma?"},"content":{"rendered":"<h2><b>Angle closure glaucoma is a rare, but serious form of glaucoma that requires immediate medical attention.\u00a0\u00a0<\/b><\/h2>\n<p>Closed angle glaucoma develops as a result of a <i>sudden build up of eye pressure (intraocular pressure, IOP)<\/i>\u2014 rising to a dangerous level in just a few hours.<\/p>\n<ul>\n<li style=\"font-weight: 400;\">Glaucoma affects up to 5% of adults ages 70 and above, and increases to over 9% for those 80 and older.<\/li>\n<li style=\"font-weight: 400;\">Angle closure glaucoma accounts for less than 20% of all glaucoma cases.<\/li>\n<li style=\"font-weight: 400;\">About 1 in 1,000 people develop angle closure glaucoma in their lifetime.<\/li>\n<li style=\"font-weight: 400;\">Angle closure glaucoma typically affects people over the age of 40, and most frequently occurs around age 60-70 years.<\/li>\n<\/ul>\n<h2><b>Symptoms of angle closure glaucoma<\/b><\/h2>\n<p><b>If you experience any of the following symptoms, seek immediate medical attention.\u00a0<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\">Blurred vision<\/li>\n<li style=\"font-weight: 400;\">Seeing halos around lights<\/li>\n<li style=\"font-weight: 400;\">Eye pain<\/li>\n<li style=\"font-weight: 400;\">Headaches<\/li>\n<li style=\"font-weight: 400;\">Nausea<\/li>\n<li style=\"font-weight: 400;\">Vomiting<\/li>\n<\/ul>\n<h2><b>What is \u2018closed angle\u2019 glaucoma?<\/b><\/h2>\n<p>Closed angle glaucoma occurs when your iris and cornea move toward each other, closing the anterior angle between them. When the angle is closed, it blocks the <i>entire <\/i>fluid drainage system, namely the uveoscleral drains and trabecular meshwork\u2014 blocking the outflow of ocular fluid <i>completely<\/i>.<\/p>\n<p>This sudden halt of fluid drainage, causes a sudden increase in IOP to 30, 40, or even 50+ mm Hg, and damages the optic nerve.<\/p>\n<p><b>It is important to seek immediate medical attention, to receive treatment as soon as possible\u2014 this is a medical emergency that can cause permanent blindness in a matter of hours.\u00a0<\/b><\/p>\n<h2><b>Who is at risk of angle closure glaucoma?<\/b><\/h2>\n<p>Closed angle glaucoma can occur when your pupils dilate too wide, or too quickly. The following factors may put you at a higher risk of angle closure glaucoma.<\/p>\n<ul>\n<li style=\"font-weight: 400;\">Age, over 55<\/li>\n<li style=\"font-weight: 400;\">Family history of glaucoma<\/li>\n<li style=\"font-weight: 400;\">Narrow anterior angle<\/li>\n<li style=\"font-weight: 400;\">Asian or Inuit descent<\/li>\n<li style=\"font-weight: 400;\">Gender, female<\/li>\n<li style=\"font-weight: 400;\">Diabetic retinopathy<\/li>\n<li style=\"font-weight: 400;\">Cataracts<\/li>\n<li style=\"font-weight: 400;\">Moderate to high farsightedness (hyperopia)<\/li>\n<li style=\"font-weight: 400;\">Ocular tumors<\/li>\n<li style=\"font-weight: 400;\">Ectopic lens, when lens moves within the eye<\/li>\n<li style=\"font-weight: 400;\">Ocular ischemia, narrowed blood vessels in the eye<\/li>\n<li style=\"font-weight: 400;\">Uveitis, or ocular inflammation<\/li>\n<li style=\"font-weight: 400;\">Certain drugs such as antihistamines, cold medications, and antidepressants<\/li>\n<li style=\"font-weight: 400;\">Medications such as sulfonamides, topiramate, or phenothiazines<\/li>\n<\/ul>\n<p><strong>If you suspect you have glaucoma, <a rel=\"noopener\" href=\"https:\/\/www.optometrists.org\/practice-search\/\" target=\"_blank\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/www.optometrists.org\/practice-search\/&amp;source=gmail&amp;ust=1626760891136000&amp;usg=AFQjCNFHnklrD-k7GckF_J6pnDwdBDDa9Q\">contact an eye doctor<\/a>\u00a0near you, who can diagnose and treat the condition.<\/strong><\/p>\n<p><strong>SEE RELATED:<\/strong> <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/eye-conditions\/glaucoma-guide\/glaucoma-faqs\/what-is-open-angle-glaucoma\/\">What Is Open Angle Glaucoma?<\/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<ul><\/ul>\n<ul><\/ul>\n<h2><b>How is angle closure glaucoma treated?<\/b><\/h2>\n<p>Angle closure glaucoma is generally treated with anti-glaucoma eye drops or surgery.<\/p>\n<p>Different types of eye drops or surgeries aimed at reducing IOP levels may be recommended, depending on the stage of glaucoma.<\/p>\n<h3><b>1. Anti-glaucoma eye drops<\/b><\/h3>\n<p>Anti-glaucoma eye drops are often the first plan of action, as most cases of glaucoma can be controlled with eye drops.<\/p>\n<p><b>Types of eye drops:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>Prostaglandins <\/b>relax the muscles in the eyes to allow better fluid drainage, reducing build-up of IOP.<\/li>\n<li style=\"font-weight: 400;\"><b>Beta-blockers<\/b> are used in a variety of glaucoma eye drops. They decrease the <i>amount <\/i>of ocular fluid production and are often prescribed in combination with prostaglandins.<\/li>\n<li style=\"font-weight: 400;\"><b>Alpha-adrenergic agonists<\/b> decrease the <i>rate <\/i>of fluid production. They can be used alone or in combination with other anti-glaucoma eye drops.<\/li>\n<li style=\"font-weight: 400;\"><b>Carbonic anhydrase inhibitors<\/b> decrease the <i>rate <\/i>of fluid production, and are used in combination with other anti-glaucoma eye drops<\/li>\n<li style=\"font-weight: 400;\"><b>Parasympathomimetics<\/b> are very often used to control IOP in narrow-angle glaucoma. They work to increase ocular fluid drainage by opening the narrow angle where drainage occurs.<\/li>\n<li style=\"font-weight: 400;\"><b>Epinephrine <\/b>decreases the rate of ocular fluid production, and increases its outflow from the eye.<\/li>\n<li style=\"font-weight: 400;\"><b>Hyperosmotic agents <\/b>are used in emergencies, for patients with a severely high IOP that must be reduced immediately before permanent damage occurs. They reduce IOP by lowering ocular fluid volume.<\/li>\n<li style=\"font-weight: 400;\"><b>Combination glaucoma drugs<\/b> include two different anti-glaucoma medicines. Many times, patients with glaucoma require more than one type of medication to control IOP.<\/li>\n<\/ul>\n<h3><b>2. Iridotomy\u00a0<\/b><\/h3>\n<p>Iridotomy is a laser procedure in which a tiny hole is created in the iris to release fluid build-up, and improve fluid drainage through the anterior angle.<\/p>\n<h3><b>3. Trabeculectomy<\/b><\/h3>\n<p>Trabeculectomy is a non-laser procedure that is performed in cases of advanced glaucoma, where severe IOP levels have caused optic nerve damage. During this procedure, the surgeon creates <i>an artificial opening<\/i> in the eye for ocular fluid to effectively drain through.<\/p>\n<h3><b>4. Suprachoroidal shunts<\/b><\/h3>\n<p>Suprachoroidal shunts successfully lower IOP levels, and can be effective in treating moderate to severe glaucoma. During this procedure, tiny tubes or shunts, are inserted into the eye to improve fluid drainage from the anterior angle.<\/p>\n<h2><b>When to see your eye doctor<\/b><\/h2>\n<p>Closed angle glaucoma is an acute condition that occurs suddenly, and requires immediate medical attention.<\/p>\n<p><strong>LEARN MORE:\u00a0<\/strong>\u00a0<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/eye-conditions\/\">Guide to Eye Conditions<\/a><\/p>\n<p><strong>If you are concerned about your vision and ocular health, or you may be at risk of developing angle closure glaucoma, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\">schedule a comprehensive eye exam<\/a> as soon as possible.<\/strong><\/p>\n<p>Your eye doctor can detect signs of increased eye pressure before damage occurs, and prescribe an effective treatment to help prevent vision loss.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Angle closure glaucoma is a rare, but serious form of glaucoma that requires immediate medical attention.\u00a0\u00a0 Closed angle glaucoma develops as a result of a<\/p>\n","protected":false},"author":4,"featured_media":6878,"parent":6884,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-article.php","meta":{"footnotes":""},"categories":[],"tags":[84,156,216,204,302,241,136],"class_list":["post-6877","page","type-page","status-publish","has-post-thumbnail","hentry","tag-adults","tag-blurry","tag-disease","tag-eye-drops","tag-eye-pressure","tag-glaucoma","tag-vision-problem"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Is Angle Closure Glaucoma? 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