{"id":16651,"date":"2021-08-05T07:49:23","date_gmt":"2021-08-05T07:49:23","guid":{"rendered":"https:\/\/www.optometrists.org\/?page_id=16651"},"modified":"2021-08-05T07:49:23","modified_gmt":"2021-08-05T07:49:23","slug":"what-is-a-vertical-deviation","status":"publish","type":"page","link":"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/strabismus-crossed-eyes\/what-is-a-vertical-deviation\/","title":{"rendered":"What is a Vertical Deviation?"},"content":{"rendered":"<h2><b>Vertical deviation (DVD) is an eye condition that causes eye strain, fatigue and even migraines.<\/b><\/h2>\n<p>If you experience headaches or your office or school performance is being impacted, you may have a vertical deviation (DVD), an eye problem that is often missed in general eye exams.<\/p>\n<p>Vertical deviation of the eyes is <a href=\"https:\/\/www.optometrists.org\/vision-therapy\/guide-to-vision-therapy\/\">successfully treated by vision therapy<\/a>.<\/p>\n<h2><b>What is dissociated vertical deviation (DVD)?<\/b><\/h2>\n<p><b>DVD is a condition in which the eyes don\u2019t work together easily, as one eye has a tendency to drift upwards, similar to an <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/\">eye turn or strabismus.<\/a>\u00a0<\/b><\/p>\n<p>In DVD, one eye tends to stray upwards on a regular or irregular basis, and the amount of drifting may vary during the day. Upward drift can affect one or both eyes, and the amount of drift varies.<\/p>\n<p>In addition to the most typical upward drift found in DVD, outward drift or rotation of one of the eyes can also occur. This eye drift can also be referred to as <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/hypertropia-and-hyperphoria\/\">hyperphoria or hypotropia.<\/a><\/p>\n<h2><b>Why does DVD occur?<\/b><\/h2>\n<p>DVD isn&#8217;t ordinarily apparent at birth, but usually presents by age two or three.\u00a0 Children with early-onset <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/\">strabismus (eye turns)<\/a> have the highest rate of DVD, as their eyes have not developed strong \u2018teamwork\u2019 yet.<\/p>\n<p>A loss of 3D vision or depth perception is significantly linked to the presence of DVD. It may also develop following eye muscle surgery to correct strabismus.<\/p>\n<p><b>SEE RELATED: <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/hypertropia-and-hyperphoria\/\">Hypertropia or Hyperphoria<\/a><\/b><\/p>\n<p><b>If you or your child experiences any of the symptoms below, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\">contact an eye doctor near you.<\/a><\/b><\/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>Signs and symptoms of DVD<\/b><\/h2>\n<p>Dissociated vertical deviation can cause a variety of\u00a0 symptoms, including but not limited to:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.optometrists.org\/childrens-vision\/a-guide-to-eye-turns\/\">Eye turn<\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Deviation of one eye<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Spatial disorientation<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Diplopia (double vision)<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Inaccurate depth perception<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Abnormal postural adaptation\/abnormal working distance<\/li>\n<\/ul>\n<h2><b>How to treat DVD<\/b><\/h2>\n<p><b><a href=\"https:\/\/www.optometrists.org\/vision-therapy\/guide-to-vision-therapy\/\">Vision therapy<\/a> or prism glasses are the most effective treatments when DVD is significant.<\/b><\/p>\n<p>Vision therapy includes a specific regimen of eye exercises, prescription glasses, and\/or prisms.\u00a0 The goal of treatment is to improve the eyes&#8217; ability to work together to prevent upward drift.<\/p>\n<p><b>LEARN MORE: <a href=\"https:\/\/www.optometrists.org\/vision-therapy\/guide-to-vision-therapy\/\">Guide to Vision Therapy<\/a><\/b><\/p>\n<p><em>If you or your child shows any signs of DVD, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\">schedule an appointment with an eye doctor<\/a> near you who can discuss <a href=\"https:\/\/www.optometrists.org\/vision-therapy\/guide-to-vision-therapy\/\">vision therapy<\/a> and the best treatment options with you.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vertical deviation (DVD) is an eye condition that causes eye strain, fatigue and even migraines. If you experience headaches or your office or school performance<\/p>\n","protected":false},"author":4,"featured_media":16652,"parent":340,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-article.php","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-16651","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a Vertical Deviation? - 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\/childrens-vision\/a-guide-to-eye-turns\/strabismus-crossed-eyes\/what-is-a-vertical-deviation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a Vertical Deviation? - Optometrists.org\" \/>\n<meta property=\"og:description\" content=\"Vertical deviation (DVD) is an eye condition that causes eye strain, fatigue and even migraines. 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