{"id":20388,"date":"2022-01-04T09:19:07","date_gmt":"2022-01-04T09:19:07","guid":{"rendered":"https:\/\/www.optometrists.org\/?page_id=20388"},"modified":"2022-01-04T09:19:07","modified_gmt":"2022-01-04T09:19:07","slug":"why-do-i-need-glasses-7-faqs","status":"publish","type":"page","link":"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/eye-exams\/why-do-i-need-glasses-7-faqs\/","title":{"rendered":"Why Do I Need Glasses? 7 FAQs\u00a0"},"content":{"rendered":"<h2><b>Over 25% of the world\u2019s population wears glasses.<\/b><\/h2>\n<p>Glasses are worn for the correction of blurry vision caused by a refractive error \u2014 which is by far one of the most prevalent healthcare issues today.<\/p>\n<p><em>Here are some of the most frequently asked questions about refractive errors, which should provide some insight into why your eye doctor has prescribed glasses for you.<\/em><\/p>\n<h2><b>Q1: What is a refractive error?<\/b><\/h2>\n<p><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/eye-exams\/the-4-main-refractive-errors-clearly-explained\/\">Refractive error<\/a> refers to a condition in which light that enters the eye is focused incorrectly, causing blurry vision.<\/p>\n<p>To achieve clear sight, the light entering the eye needs to be focused directly onto the <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-health\/how-does-the-eye-work\/eye-anatomy-the-back-of-the-eye\/\">retina<\/a>, the nerve layer at the back of the eye.<\/p>\n<p>Before light reaches the retina, it is first focused by the <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-health\/how-does-the-eye-work\/ocular-anatomy-the-front-of-the-eye\/\">cornea,<\/a> the clear dome at the front of the eye. Then, further focusing occurs at the <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-health\/how-does-the-eye-work\/ocular-anatomy-the-front-of-the-eye\/\">lens<\/a>, on its way to the retina. The lens is responsible for changing focus, so we can see near and distant objects clearly.<\/p>\n<p>There are a number of reasons why light might not focus correctly, including:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Inability of the lens to accurately change focus<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Shape of the cornea<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Overall length of the eye<\/li>\n<\/ul>\n<p>The four most common refractive errors are: <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/guide-to-pediatric-eye-conditions\/what-is-myopia\/\">myopia<\/a> (nearsightedness), <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/guide-to-pediatric-eye-conditions\/what-is-long-sightedness\/\">hyperopia<\/a> (farsightedness), <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/guide-to-pediatric-eye-conditions\/what-is-astigmatism\/\">astigmatism<\/a> and presbyopia.<\/p>\n<h2><b>Q2: How is a refractive error diagnosed?<\/b><\/h2>\n<p>Eye doctors are trained to detect and diagnose refractive errors as part of a routine comprehensive <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/\">eye exam.\u00a0<\/a><\/p>\n<p><b>During your eye exam, your eye doctor will use a process known as a <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/eye-exams\/how-are-refractive-errors-diagnosed\/\">refraction<\/a>.<\/b><\/p>\n<p>This process will help the optometrist determine how your eyes focus and if you might need glasses or <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-contact-lenses\/\">contact lenses<\/a>.<\/p>\n<p>The first step of the refraction allows the eye doctor to obtain an objective measure of your eye\u2019s focusing ability and an initial idea of your optical prescription.<\/p>\n<p>The next step involves the use of a phoropter, which allows the eye doctor to rely on your input to get an accurate measurement of your prescription.<\/p>\n<p>If your eye doctor feels you might need a separate prescription for near vision, such as with <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-optical-lenses\/guide-to-bifocals-and-multifocals\/presbyopia\/\">presbyopia<\/a>, they will perform a near vision test to round out your refraction<b>.<\/b><\/p>\n<h2><b>Q3: What is myopia?<\/b><\/h2>\n<p>Myopia is also popularly known as nearsightedness. It is a type of refractive error caused by either the eye being too long from front to back, or the corneal curve being too steep.<\/p>\n<p><b>If you notice that your distance vision is blurry, such as when driving or watching TV, you most likely have myopia.<\/b><\/p>\n<p>Myopia causes light entering the eye to be focused at a point in front of the retina, causing the image to blur by the time it reaches the retina, at the back of the eye.<\/p>\n<p>A person with myopia will notice that as objects get further away, they appear blurrier, whereas things that are close by remain in focus.<\/p>\n<p><strong>SEE RELATED: <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/eye-exams\/why-do-optometrists-use-eye-charts\/\">Why Do Optometrists Use Eye Charts?\u00a0<\/a><\/strong><\/p>\n<p><b>If you are experiencing blurry vision, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\">schedule an eye exam with 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>Q4: What is hyperopia?<\/b><\/h2>\n<p>Hyperopia is often referred to as farsightedness.<\/p>\n<p><b>Hyperopia causes a difficulty reading or maintaining focus for extended periods of time.<\/b><\/p>\n<p>Hyperopia is a refractive error that can stem from a number of issues, including:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Eye length being too short<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">Cornea being too flat in shape<\/li>\n<\/ul>\n<p>A person with hyperopia will notice that objects come into focus as they get further away, but close-up images and objects seem blurry.<\/p>\n<h2><b>Q5: What is presbyopia?<\/b><\/h2>\n<p>Presbyopia is a refractive error that occurs as a natural part of aging, with every person experiencing symptoms to a smaller or larger degree.<\/p>\n<p>Presbyopia occurs when the lens of the eye begins to harden, losing the elasticity that makes focusing possible.<\/p>\n<p><b>If you are in your 40\u2019s, and find that reading small print has become harder to see clearly, this is likely the beginning of presbyopia<\/b>.<\/p>\n<p>Presbyopia makes near objects seem blurry and distorted. A person experiencing presbyopia may feel the need to hold reading material at arm\u2019s length to see the text or images more clearly.<\/p>\n<h2><b>Q6: What is astigmatism?<\/b><\/h2>\n<p><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-health\/how-does-the-eye-work\/astigmatism-top-9-faqs\/\">Astigmatism<\/a> is a common refractive error in which the cornea of the eye is shaped more like an oval than the normal spherical shape.<\/p>\n<p><b>A person with astigmatism may experience blurry or double vision, as well as eye strain and headaches.<\/b><\/p>\n<p>Astigmatism causes multiple refraction points as light enters the eye, resulting in blurry or double vision at both near and far distances.<\/p>\n<h2><b>Q7: Why do I need glasses or contact lenses?<\/b><\/h2>\n<p>The most common ways to treat refractive errors are with eyeglasses and contact lenses.<\/p>\n<p><b>The function of these optical corrections is to provide you with clear and comfortable vision.<\/b><\/p>\n<p>Myopia, hyperopia and astigmatism will require single prescription eyeglasses, whereas presbyopia may require <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-optical-lenses\/guide-to-bifocals-and-multifocals\/\">bifocals, multifocals<\/a> or <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-optical-lenses\/optical-lenses\/\">progressive<\/a> lenses.<\/p>\n<p>For severe astigmatism, custom-made contact lenses or <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-contact-lenses\/what-are-scleral-lenses\/what-are-the-benefits-of-scleral-lenses\/\">scleral contact lenses<\/a> may be prescribed to address the unique curvature of the astigmatic cornea or lens.<\/p>\n<p>If your <a href=\"https:\/\/www.optometrists.org\/childrens-vision\/guide-to-pediatric-eye-conditions\/what-is-myopia\/why-is-my-childs-myopia-worsening\/\">child\u2019s myopia is worsening<\/a>, speak with your eye doctor about <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-myopia-management\/\">Myopia Management<\/a>, a customized program used to stop or slow down the rate of myopia progression.<\/p>\n<p><a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/optical\/guide-to-laser-refractive-surgery\/\">Laser refractive surgery<\/a> is a permanent option for correcting refractive errors, though this procedure is only available to adults whose prescription has remained stable for at least two years.<\/p>\n<p><b>LEARN MORE: <a href=\"https:\/\/www.optometrists.org\/general-practice-optometry\/guide-to-eye-exams\/\">Guide to Eye Exams<\/a><\/b><\/p>\n<p><strong>If your vision seems blurry, <a href=\"https:\/\/www.optometrists.org\/practice-search\/\">contact an eye doctor near you for a comprehensive eye exam.<\/a><\/strong><\/p>\n<p><i>Here are our top 7 FAQs about why people need to wear glasses.<\/i><\/p>\n<p><i>If your vision is blurry, there are a range of treatment options that can help improve your vision clarity&#8230; and your quality of life.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Over 25% of the world\u2019s population wears glasses. Glasses are worn for the correction of blurry vision caused by a refractive error \u2014 which is<\/p>\n","protected":false},"author":1206,"featured_media":20389,"parent":304,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"template-article.php","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-20388","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>Why Do I Need Glasses? 7 FAQs\u00a0 - 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-eye-exams\/eye-exams\/why-do-i-need-glasses-7-faqs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Do I Need Glasses? 7 FAQs\u00a0 - Optometrists.org\" \/>\n<meta property=\"og:description\" content=\"Over 25% of the world\u2019s population wears glasses. 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