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20 over 20

20/20 Is not a grade or a rating! Instead, It isa term that descrlbes visual clarity measured at a default distance of 20 feet. 1 20 vision 20 To have 20/20 vislon means to see something clearly at 20 feet what other people with normal vision clarity see at 10 or 200 feet. Having 20/20 vision does not mean having PERFECT vislon. It is not only a measurement for sharpness of vislon at a certaln distance. 20/20 Is a default distance used by most optometrists to measure visual clarity. Others use 15 feet as the distance to measuring the clarity of your eyesight. 20 feet = 6m 20 Soconds The 20-20-20 rule can prevent eye stralns and other eyesight problems. Take a break every 20 mlnute and look at something 2 feet away for 20 seconds. 20 Aminutes 15 feet 4 m 20 foots 10 feet 6/6 Is the metric equivalent of 20/20 (feet). 2m When eye doctors day you have (2/HAPPY) vislon, your vislon Is not perfect but It's good enough. E F P. The name of the chart TOZ. LPED n PEOFO. commonly used to test visual aculty is called the Snellen chart. LEEEEP PEL AaT ...... A newborn baby's vision starts at 20/400 and develops to 20/20 when they reach the age of 6. ******* There are more farsighted people than there are nearsighted people. 10

20 over 20

shared by netoparra on Mar 03
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