20 20 Vision

vision_explainer

25/20 vision describes how sharply a person can see details at a specific distance, using a ratio format rooted in standardized eye chart testing. In the 25/20 expression, the n...

eye-vision

20/20 and 20/200 are measurements of visual acuity that describe how clearly a person can see details at a standard distance. 20/20 vision means a person can resolve line detail...