{"id":4860,"date":"2025-03-04T16:58:24","date_gmt":"2025-03-04T16:58:24","guid":{"rendered":"https:\/\/www.1800getlens.com\/eyetopics\/?p=4860"},"modified":"2026-06-18T11:55:22","modified_gmt":"2026-06-18T11:55:22","slug":"how-bad-is-my-eye-prescription","status":"publish","type":"post","link":"https:\/\/www.1800getlens.com\/eyetopics\/how-bad-is-my-eye-prescription\/","title":{"rendered":"How Bad Is My Eye Prescription?"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Understanding Your Eye Prescription<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Have you ever looked at your eye prescription and wondered what all those numbers and symbols mean? Many people feel concerned when they see a strong prescription, but what does it indicate? This guide will break down the details of eye prescriptions, vision clarity, and what is considered a &#8220;bad&#8221; prescription to help you better understand your eyesight.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How to Read an Eye Prescription<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding your eye prescription is the first step toward knowing what type of corrective lenses you need. Whether you wear <a href=\"https:\/\/www.1800getlens.com\/eyeglasses\/\">glasses<\/a> or <a href=\"https:\/\/www.1800getlens.com\/contacts\/\">contact lenses<\/a>, your prescription includes specific measurements that help eye care professionals provide you with the right level of vision correction. Each component of your prescription plays an important role in addressing nearsightedness, farsightedness, <a href=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-astigmatism\/\" data-type=\"link\" data-id=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-astigmatism\/\">astigmatism<\/a>, or other vision conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;ve ever looked at your prescription and felt confused by the numbers and abbreviations, you&#8217;re not alone. Here\u2019s a breakdown of what each term means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>OD and OS<\/strong> \u2013 These abbreviations stand for oculus dexter (OD) and oculus sinister (OS), referring to the right eye (OD) and left eye (OS) respectively. Some prescriptions also include OU (oculus uterque), meaning both eyes.<\/li>\n\n\n\n<li><strong>Sphere (SPH)<\/strong> \u2013 This number measures the degree of correction needed for nearsightedness (-) or farsightedness (+). A higher number indicates stronger vision correction.<\/li>\n\n\n\n<li><strong>Cylinder (CYL) and Axis<\/strong> \u2013 These measurements apply to astigmatism, a condition where the cornea is irregularly shaped. Cylinder indicates the severity, while axis (measured in degrees) specifies the orientation of the astigmatism.<\/li>\n\n\n\n<li><strong>Add (Addition)<\/strong> \u2013 If you need bifocal or progressive lenses, this value shows the added magnification required for reading or close-up work.<\/li>\n\n\n\n<li><strong>Pupillary Distance (PD)<\/strong> \u2013 This measurement, usually in millimeters, represents the distance between the centers of your pupils. It ensures that lenses are correctly positioned in your frames for optimal vision clarity.<\/li>\n\n\n\n<li><strong>Prism and Base<\/strong> \u2013 In some prescriptions, prism correction is included for individuals who experience double vision (diplopia). The prism measurement helps align images, while the base direction (up, down, in, or out) indicates how the correction is applied.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By understanding these terms, you\u2019ll be able to interpret your prescription with confidence and make informed decisions when selecting eyewear. If your vision changes over time,<a href=\"https:\/\/www.1800getlens.com\/vision-test\/?srsltid=AfmBOoq7DWQRslyJ19Q2AtBwS9gvO30j1VYgjUuF71314gWWllt3yclh\"> regular eye exams<\/a> are important to keep your prescription updated.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What Does 20\/20 Vision Mean?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">People often hear the term 20\/20 vision, but what does it mean?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A person with 20\/20 vision can see an object 20 feet away that the average person should see at that distance.<\/li>\n\n\n\n<li>A 20\/40 vision means you need to be 20 feet away to see what a person with normal vision can see from 40 feet away.<\/li>\n\n\n\n<li>20\/200 vision or worse, even with corrective lenses, is considered legally blind in the U.S.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">While 20\/20 is ideal, many people function well with slight vision impairments corrected by <a href=\"https:\/\/www.1800getlens.com\/eyeglasses\/\" title=\"glasses\">glasses<\/a> or contacts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Different Types of Vision Problems<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Nearsightedness (Myopia)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distant objects appear blurry, while nearby objects remain clear.<\/li>\n\n\n\n<li>Typically begins in childhood and may worsen over time.<\/li>\n\n\n\n<li>Corrected with glasses, <a href=\"https:\/\/www.1800getlens.com\/contacts\/\" title=\"contact lenses\">contact lenses<\/a>, or refractive surgery.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Farsightedness (Hyperopia)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Close-up objects are blurry, while distant objects may be clearer.<\/li>\n\n\n\n<li>Often hereditary and more noticeable with age.<\/li>\n\n\n\n<li>Requires convex lenses to help the eye focus properly.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Astigmatism<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Caused by an irregularly shaped cornea or lens.<\/li>\n\n\n\n<li>Leads to blurry or distorted vision at all distances.<\/li>\n\n\n\n<li>Treated with <a href=\"https:\/\/www.1800getlens.com\/contacts\/toric-lenses\/\">toric lenses<\/a> in glasses or contacts.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><a href=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-presbyopia\/\" data-type=\"link\" data-id=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-presbyopia\/\">Presbyopia<\/a><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Age-related difficulty focusing on close objects.<\/li>\n\n\n\n<li>Typically occurs after age 40.<\/li>\n\n\n\n<li>Corrected with reading glasses, bifocals, or <a href=\"https:\/\/www.1800getlens.com\/contacts\/bifocal-lenses\/\" title=\"Multifocal Contact Lenses\">multifocal contact lenses<\/a>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">What Is Considered a &#8220;Bad&#8221; Eye Prescription?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">There\u2019s no universal definition of a &#8220;bad&#8221; prescription, as it depends on how well <strong>corrective lenses<\/strong> can improve vision. Here\u2019s a general breakdown:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Prescription Strength<\/strong><\/td><td><strong>Severity<\/strong><\/td><td><strong>Common Symptoms<\/strong><\/td><\/tr><tr><td>-0.25 to -2.00<\/td><td>Mild myopia<\/td><td>Slight trouble seeing distant objects<\/td><\/tr><tr><td>-2.25 to -5.00<\/td><td>Moderate myopia<\/td><td>Blurry distance vision, squinting<\/td><\/tr><tr><td>-5.25 and beyond<\/td><td>High myopia<\/td><td>Severe difficulty seeing far, increased eye strain<\/td><\/tr><tr><td>+0.25 to +2.00<\/td><td>Mild hyperopia<\/td><td>Occasional difficulty reading or focusing up close<\/td><\/tr><tr><td>+2.25 to +5.00<\/td><td>Moderate hyperopia<\/td><td>Frequent eye strain, headaches<\/td><\/tr><tr><td>+5.25 and beyond<\/td><td>High hyperopia<\/td><td>Severe difficulty focusing, risk of lazy eye (amblyopia)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">People with severe prescriptions may need specialized lenses to correct their vision effectively.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Signs You Need a New Prescription<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"384\" src=\"https:\/\/www.1800getlens.com\/eyetopics\/wp-content\/uploads\/2025\/03\/eye-exam-prescription-1024x384.png\" alt=\"\" class=\"wp-image-4862\" style=\"width:700px\" srcset=\"https:\/\/www.1800getlens.com\/eyetopics\/wp-content\/uploads\/2025\/03\/eye-exam-prescription-1024x384.png 1024w, https:\/\/www.1800getlens.com\/eyetopics\/wp-content\/uploads\/2025\/03\/eye-exam-prescription-300x112.png 300w, https:\/\/www.1800getlens.com\/eyetopics\/wp-content\/uploads\/2025\/03\/eye-exam-prescription-768x288.png 768w, https:\/\/www.1800getlens.com\/eyetopics\/wp-content\/uploads\/2025\/03\/eye-exam-prescription.png 1068w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Your prescription should be updated regularly to maintain clear and comfortable vision. Ignoring changes in your eyesight can lead to unnecessary discomfort and strain. Here are common signs that it&#8217;s time for an <a href=\"https:\/\/www.1800getlens.com\/vision-test\/\" title=\"eye exam\">eye exam<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Frequent Headaches or Eye Strain<\/strong> \u2013 If you\u2019re experiencing frequent headaches or your eyes feel tired after reading or screen use, your prescription may no longer be accurate.<\/li>\n\n\n\n<li><strong>Difficulty Seeing at Night<\/strong> \u2013 Struggling with <a href=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-night-driving\/\" data-type=\"link\" data-id=\"https:\/\/www.1800getlens.com\/contacts\/contact-lenses-for-night-driving\/\">night driving<\/a>, halos around lights, or blurry vision in dim lighting could indicate that your prescription needs an adjustment.<\/li>\n\n\n\n<li><strong>Squinting to See Clearly<\/strong> \u2013 If you find yourself squinting to focus, it\u2019s a sign that your lenses aren\u2019t providing the right correction level.<\/li>\n\n\n\n<li><strong>Needing to Adjust Distance<\/strong> \u2013 Holding objects closer or farther than usual to read or see details clearly means your vision has changed.<\/li>\n\n\n\n<li><strong>Experiencing Double Vision<\/strong> \u2013 If you notice double vision or distortion, schedule an eye exam immediately, as this could indicate an issue beyond a simple prescription change.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Scheduling an <a href=\"https:\/\/www.1800getlens.com\/vision-test\/?srsltid=AfmBOorRPBEwi7Qz6ArQ39j11rtmMlss6DlOGkwUvm8Z_weZgRXh9KFl\">eye exam<\/a> every 1\u20132 years helps ensure your vision stays clear and comfortable.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Frequently Asked Questions<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">Can my eye prescription change over time?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Yes, your prescription can change due to age, eye strain, or underlying eye conditions. Regular eye exams help monitor changes and adjust your prescription as needed.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Does a stronger prescription mean worse vision?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Not necessarily. A stronger prescription means your vision requires more correction, but with the right lenses, you can still see clearly.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">How often should I get my eyes checked?<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Most eye doctors recommend an exam every 1\u20132 years, but those with existing vision problems may need more frequent check-ups.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Where to Get Prescription Eyewear Online<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you need new glasses, prescription <a href=\"https:\/\/www.1800getlens.com\/sunglasses\/\" title=\"sunglasses\">sunglasses<\/a>, or an updated contact lens prescription, 1-800-GET-LENS makes it easy to find what you need.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A wide selection of prescription eyewear.<\/li>\n\n\n\n<li>Affordable pricing with regular discounts.<\/li>\n\n\n\n<li>Convenient online vision test for renewing prescriptions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By understanding your prescription and taking steps to maintain your eye health, you can enjoy clear, comfortable vision every day.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Understanding Your Eye Prescription Have you ever looked at your eye prescription and wondered what all those numbers and symbols mean? Many people feel concerned when they see a strong prescription, but what does it indicate? This guide will break down the details of eye prescriptions, vision clarity, and what is considered a &#8220;bad&#8221; prescription [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":4861,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,14],"tags":[],"semantictags":[],"class_list":["post-4860","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health","category-knowledge-center"],"_links":{"self":[{"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/posts\/4860","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/comments?post=4860"}],"version-history":[{"count":5,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/posts\/4860\/revisions"}],"predecessor-version":[{"id":6177,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/posts\/4860\/revisions\/6177"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/media\/4861"}],"wp:attachment":[{"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/media?parent=4860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/categories?post=4860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/tags?post=4860"},{"taxonomy":"semantictags","embeddable":true,"href":"https:\/\/www.1800getlens.com\/eyetopics\/wp-json\/wp\/v2\/semantictags?post=4860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}