{ bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, iasLog("criterion : cdo_l = en"); iasLog("criterion : cdo_ei = 20-20-vision"); { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, Strong and healthy vision makes almost every aspect of life easier. { bidder: 'sovrn', params: { tagid: '446382' }}, Answer: The term 20/20 is a measure of visual acuity. }] In particular, 20/20 vision means that you have sharp vision (can see clearly) at 20 feet from an eye test chart. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, { bidder: 'ix', params: { siteId: '195451', size: [300, 50] }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, { bidder: 'ix', params: { siteId: '195465', size: [300, 250] }}, {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, pbjs.que = pbjs.que || []; {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 50], [300, 50]] } }, dfpSlots['leftslot'] = googletag.defineSlot('/2863368/leftslot', [[120, 600], [160, 600]], 'ad_leftslot').defineSizeMapping(mapping_leftslot).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'left').addService(googletag.pubads()); { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }}, googletag.pubads().setTargeting("cdo_pt", "entry"); Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an examinee's ability to recognize small details with precision. { bidder: 'appnexus', params: { placementId: '11654149' }}, Hindsight is an understanding of a past event. { bidder: 'ix', params: { siteId: '195467', size: [300, 50] }}, { bidder: 'sovrn', params: { tagid: '346693' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776130', position: 'btf' }}, Find more ways to say 20/20 vision, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. More simply, your vision is superior to the average person. "noPingback": true, } expires: 60 "login": { ()If you have 20/15 vision, you can see things at 20 feet that people with normal 20/20 vision syncDelay: 3000 While all of these skills are important, â20/20 visionâ is really only describing one aspect of our sightâvisual acuity. Follow these important guidelines for when to have your child’s eyes examined. They also are called Snellen fractions, named after Herman Snellen, the Dutch ophthalmologist who developed this measurement system in 1862. googletag.pubads().setCategoryExclusion('mcp').setCategoryExclusion('resp').setCategoryExclusion('wprod'); { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot' }}, defaultGdprScope: true Eye charts can be configured in various ways, but generally, if during an eye test you can read the big E at the top but none of the letters lower than that, your vision is considered 20/200. partner: "uarus31" storage: { "authorizationTimeout": 10000 googletag.pubads().setTargeting('cdo_alc_pr', pl_p.split(",")); Snellen charts display letters of progressively smaller size. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, }], }, { bidder: 'sovrn', params: { tagid: '446381' }}, Usage explanations of natural written and spoken English, 0 && stateHdr.searchDesk ? iasLog("__tcfapi removeEventListener", success); { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, { bidder: 'appnexus', params: { placementId: '11654174' }}, var mapping_topslot_b = googletag.sizeMapping().addSize([746, 0], [[728, 90]]).addSize([0, 0], []).build(); But you may lose your near vision. "authorizationFallbackResponse": { A person can have 20/15 vision, which is sharper than average. { bidder: 'sovrn', params: { tagid: '446381' }}, { bidder: 'openx', params: { unit: '539971081', delDomain: 'idm-d.openx.net' }}, McKinney is an ophthalmologist and glaucoma specialist at Eye Health Northwest, Oregon City, Ore. { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot_flex' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_Billboard' }}, 20/20 vision is a measurement of visual acuity. {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { Having 20/60 vision means that you must be at 20 feet to see what a person with normal vision can see at 60 feet. params: { The word in the example sentence does not match the entry word. {code: 'ad_btmslot_a', pubstack: { adUnitName: 'cdo_btmslot', adUnitPath: '/2863368/btmslot' }, mediaTypes: { banner: { sizes: [[300, 250], [320, 50], [300, 50]] } }, googletag.pubads().set("page_url", "https://dictionary.cambridge.org/dictionary/english/20-20-vision"); type: "html5", name: "_pubcid", }, The top number is your distance in feet from the chart. If you have 20/20 vision, you can see clearly at 20 ⦠} { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_HDX' }}, { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, { bidder: 'openx', params: { unit: '539971065', delDomain: 'idm-d.openx.net' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/2863368/rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_topslot' }}]}, ga('send', 'pageview'); Add 20/20 vision to one of your lists below, or create a new one. addPrebidAdUnits(pbAdUnits); When the optometrist says that you have â20/20 visionâ he is referring to your visual acuity, which is the clarity or sharpness of your vision. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, 'max': 3, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_topslot' }}, Your eyes' lenses become less able to bend. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot' }}]}, { bidder: 'openx', params: { unit: '539971080', delDomain: 'idm-d.openx.net' }}, }; { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_leftslot' }}]}, These figures are based on letter charts which are used in the standard sight test, such as the Snellen chart. 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