20 20 Vision, What Is It?
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==>> Vision problems? Looking for a way to improve your eyesight naturally? Then stop everything and read…
20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at that distance. If you have 20/100 vision, it means that you must be as close as 20 feet to see what a person with normal vision can see at 100 feet.
Tags: 20 20 Vision, eye chart, eye test
improve your eyesight | Ruth | 
February 2, 2010 8:46 am | 
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