Visual acuity - Wikipedia, the free encyclopedia In the term "20/20vision" the numerator refers to the distance in feet from ... half that acuity for distancevision and 20/10 vision would be twice normal acuity. ...
http://en.wikipedia.org/wiki/20/20_vision
The Eye Chart and 20/20Vision - AllAboutVision.com ... visual acuity; here's a sample eye chart and explanation of 20/20vision. ... your best distancevision with eyeglasses or contact lenses) is 20/200 or worse. ...
http://www.allaboutvision.com/eye-test/
2020vision and visual acuity Normal vision and visual acuity and meaning of 2020vision ... distance), a person with normal vision should be able to read the small 20/20 ...
What is 20/20Vision? An explanation of the meaning of 20/20vision. ... 20/20vision means that at a distance of 20 feet, you should be able to read the ...
http://eyedoctor.homestead.com/20vision.html
Visual Acuity: What is 20/20Vision? ... acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. ... 20/20vision only indicates the sharpness or clarity of vision at a distance. ...
visual acuity: Definition from Answers.com visual acuity n. Sharpness of vision, especially as tested with a Snellen chart. ... In the term "20/20vision" the numerator refers to the distance in feet from ...
http://www.answers.com/topic/visual-acuity
20/20Vision: 20/20 doesn't mean perfect ... a measure of the clarity or sharpness of your vision at a distance of 20 feet. ... If, on the other hand, you have 20/10 vision, you have sharp eyes! ...
Encyclopedia - Visual Acuity A reading of 20/20 is normal vision, meaning that the smallest symbol that can ... read at a distance of 20 feet what a person with normal vision reads at 40 feet. ...
About 20/20Vision | eHow.com About 20/20Vision. 20/20 is a familiar term used in reference to the quality of vision. It is actually a fraction that corresponds to the minimum distance one must ...
http://www.ehow.com/about_4569441_vision.html
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