{"id":11021,"date":"2021-05-03T10:24:50","date_gmt":"2021-05-03T10:24:50","guid":{"rendered":"https:\/\/www.optometrists.org\/?page_id=11021"},"modified":"2021-07-18T19:52:22","modified_gmt":"2021-07-18T19:52:22","slug":"hemianopsia-and-low-vision","status":"publish","type":"page","link":"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-low-vision\/hemianopsia-and-low-vision\/","title":{"rendered":"Hemianopsia and Low Vision"},"content":{"rendered":"<h2><b>A brain injury can cause the loss of over 50% of your visual field, this is known as hemianopsia.<\/b><\/h2>\n<p>Males from the ages of 50 to 70 are most frequently affected by this condition.<\/p>\n<p><b>Over 70% hemianopsias are caused by a blockage of the blood supply in the brain, most frequently due to a tumor or stroke.<\/b><\/p>\n<h2><b>What is hemianopsia?<\/b><\/h2>\n<p>Hemianopsia, sometimes called hemianopia, is the loss of sight in up to half of your field of vision.<\/p>\n<p><b>Imagine taking a pen and drawing a line across the middle of your vision. Now imagine that you can\u2019t see anything at all on one side of that line, this is what many people who have hemianopsia experience<\/b>.<\/p>\n<p>The loss of half of your vision dramatically affects the quality of life, imaging trying to get through the day with half of your vision missing<b>.<\/b><\/p>\n<p><a href=\"https:\/\/www.optometrists.org\/practice-search\/\"><b>Schedule an appointment<\/b> <\/a>with a low vision eye doctor near you to maximize your remaining vision to improve your quality of life.<\/p>\n<p><strong>SEE RELATED: <\/strong><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-low-vision\/retinitis-pigmentosa-and-low-vision\/\">Retinitis Pigmentosa and Low Vision<\/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 are the causes of hemianopsia?<\/b><\/h2>\n<p>Hemianopsia can occur when there is damage to the optic nerves, optic chiasm or visual processing regions of the brain.<\/p>\n<p><b>Strokes are the most common cause of vision loss in patients with hemianopia. However, inflammation, head injuries and cranial tumors can all be a cause as they affect the blood flow in the brain<\/b>.<\/p>\n<p>When any part of this system is damaged it can result in partial or complete loss of vision in up to half the visual field.<\/p>\n<h2><b>What are the symptoms of hemianopsia?<\/b><\/h2>\n<p>Symptoms may include:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Bumping into objects while walking, such as furniture, door frames and people<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Difficulty driving, especially when changing lanes or attempting to avoid objects on the side of the road<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Difficulty finding or reaching for objects on desks or countertops, or in closets and cabinets<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Frequently losing your place while reading or having trouble finding the start or end of a line of text<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Sensation that something is wrong with your vision<\/li>\n<\/ul>\n<p>If you suspect you may have hemianopsia, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\"><b>contact a low vision eye doctor<\/b> <\/a>near you.<\/p>\n<h2><b>How is hemianopsia treated?<\/b><\/h2>\n<p>The treatment an eye doctor will recommend depends on the extent of vision loss and the condition causing the hemianopsia.<\/p>\n<p>In some cases, if blood flow is restored the hemianopsia may improve over time. However, where neural damage has occurred in the brain, hemianopsia is usually permanent, but there are still options eye doctors may be able to recommend.<\/p>\n<p>There are several ways that eye doctors can help improve vision, including:<\/p>\n<h3><b>1. Side-Vision Awareness Glasses (SVAG)<\/b><\/h3>\n<p>SVAG provides improved vision by offering a wide viewing area. They have a vertical edge that enables a person with hemianopsia to move their eyes just a few millimeters to access the SVAG area of the lens.<\/p>\n<h3><b>2. Vision restoration therapy (VRT)<\/b><\/h3>\n<p>VRT works by repeatedly stimulating the edges of the missing field of vision. Since the adult brain has some ability to rewire itself, VRT causes the brain to grow new connections around the damaged areas to restore some lost functions.<\/p>\n<h3><b>3. Visual field expander aid<\/b><\/h3>\n<p>Special glasses can be fitted with a prism in each lens. These prisms bend incoming light so that it reaches the non-damaged section of the visual field.<\/p>\n<p><strong>LEARN MORE:\u00a0<\/strong>\u00a0<a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-low-vision\/\">Guide to Low Vision<\/a><\/p>\n<p>If you have experienced a stroke or other brain injury and are experiencing loss of vision, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\"><b>schedule an eye evaluation<\/b><\/a> with an eye doctor near you.<\/p>\n<p>An eye doctor experienced in low vision might just be able to allow you to experience a higher quality of life and get back to enjoying the vision you have.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A brain injury can cause the loss of over 50% of your visual field, this is known as hemianopsia. Males from the ages of 50 to 70 are most frequently affected by this condition. Over 70% hemianopsias are caused by a blockage of the blood supply in the brain, most frequently due to a tumor or stroke.<\/p>\n","protected":false},"author":4,"featured_media":11022,"parent":12334,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-article.php","meta":{"footnotes":""},"categories":[],"tags":[174,319],"class_list":["post-11021","page","type-page","status-publish","has-post-thumbnail","hentry","tag-low-vision","tag-low-vision-device"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hemianopsia and Low Vision - Optometrists.org<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-low-vision\/hemianopsia-and-low-vision\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hemianopsia and Low Vision - Optometrists.org\" \/>\n<meta property=\"og:description\" content=\"A brain injury can cause the loss of over 50% of your visual field, this is known as hemianopsia. 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