[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-295091-105":59,"doc-detail-295091-en":123},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":116,"head_meta":118,"extra_data":120,"updated_unix":122},105,"en","snellen-eye-chart-directions-for-use","Snellen Eye Chart - Directions for Use","","Snellen eye chart helps determine the clarity of distance vision and can support screening for nearsightedness in children. It also helps assess whether a person meets typical legal visual acuity requirements for a driver’s license. Clear directions explain how to test each eye separately at a 10-foot distance, read aloud the smallest readable lines, and stop when accuracy drops below 50%. Results are recorded by matching correct letter percentages to chart lines, with notes on measurement examples.",{"@graph":69,"@context":115},[70,84,106],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/snellen-eye-chart-directions-for-use/295091/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/snellen-eye-chart-directions-for-use/295091.png","ImageObject",300,407,{"name":92,"@type":93},"Quinn Holloway","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-22","2026-09-18",true,{"@type":102,"interactionType":103,"userInteractionCount":105},"InteractionCounter",{"@type":104},"ViewAction",11,{"@type":107,"mainEntity":108},"FAQPage",[109],{"name":110,"@type":111,"acceptedAnswer":112},"How do you record visual acuity for each eye?","Question",{"text":113,"@type":114},"After covering one eye, read the letters on lines aloud and have an assistant record accuracy. Record the line where you correctly identify either more than half (but not all) the letters, or all letters on that line plus a few (less than half) on the next line.","Answer","https://schema.org",{"og:url":83,"og:type":117,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":119,"canonical":83},"index,follow",{"doc_id":121,"site_id":62},295091,1789713591,{"code":4,"msg":5,"data":124},{"doc_id":121,"user_id":125,"nickname":92,"user_avatar":126,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":127,"file_id":128,"file_url":129,"file_type":130,"file_size":131,"view_count":105,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":14,"language":132,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":133,"faqs":134,"seo_title":135,"seo_description":67,"update_tm":122,"read_time":24},2336474466712,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","Snellen Eye Chart  \nHome use of this Snellen eye chart will help you determine the clarity of your distance vision. This can be useful to screen children for nearsightedness, which causes blurry distance vision. The chart also can help you determine if you meet the legal visual acuity requirement for a valid driver’s license (20/40 in most states) .  \nDIRECTIONS FOR USE  \nFor the best accuracy (and to prevent memorization), have someone assist you when testing your vision with this eye chart. If you use eyeglasses or contact lenses for driving or other distance vision tasks, wear them during the test.  \n1. Place the chart on a wall or easel 10 feet away.  \n2. Cover one eye with your hand, a large spoon or some other item that completely blocks the vision of the covered eye. (Do not apply pressure to the covered eye, as it might affect that eye’s vision when you test it.)  \n3. Identify a line on the chart you can comfortably read. Read the letters on that line aloud. Have your assistant stand near the chart and record your accuracy.  \n4. Continue trying to read the letters on each successively smaller line. Do not squint.  \n5. Have your assistant stop you when you fail to correctly identify at least 50 percent of the letters on a line.  \n6. Switch to the other eye and repeat.  \nRecord your visual acuity for each eye by noting the line for which you correctly identified either:  \na) More than half the letters on that line, but not all of them.  \nb) All letters on that line, plus a few letters (less than half) on the next line.  \nExamples:  \nIf you correctly identify five of the seven letters on the 20/32 line, your visual acuity for that eye is: 20/32–2/7  \nIf you correctly identify all seven letters on the 20/32 line and three of the eight letters on the 20/25 line, your visual acuity in that eye is: 20/32+3/8  \nDISCLAIMER:  \nEye charts measure only visual acuity, which is just one component of good vision. They cannot determine if your eyes are \"working overtime\" (needing to focus more than normal, which can lead to headaches and eye strain) or can they determine if your eyes work properly as a team for clear, comfortable binocular vision and accurate depth perception.  \nEye charts also cannot detect serious eye problems such as glaucoma or early diabetic retinopathy that could lead to serious vision impairment and even blindness.  \nOnly a comprehensive eye exam performed by a licensed optometrist or ophthalmologist can determine if your eyes are healthy and you are seeing as clearly and comfortably as possible.  \nTo find an eye doctor near you, [visit allaboutvision.com/locator](visit allaboutvision.com/locator)  \nPlace chart 10 feet away  \n20/200  \n20/100  \n20/80  \n20/63  \n20/50  \n20/40  \n20/32  \n20/25  \n20/20  \nTo find an eye doctor near you, [visit allaboutvision.com/locator](visit allaboutvision.com/locator)  \n1  \n2  \n3  \n4  \n5  \n6  \n7  \n8  \n9","cbCaisoe9ds6HR2k","https://ap.wps.com/l/cbCaisoe9ds6HR2k","pdf",112634,"English","# Directions for Use\n## Test setup and preparation\n## Testing each eye and recording results\n## Disclaimer and limitations","[{\"question\":\"How do you record visual acuity for each eye?\",\"answer\":\"After covering one eye, read the letters on lines aloud and have an assistant record accuracy. Record the line where you correctly identify either more than half (but not all) the letters, or all letters on that line plus a few (less than half) on the next line.\"}]","Snellen Eye Chart - Directions for Use | PDF"]