Why is normal vision referred to as 20/20?
If your optometrist says you have 20/60 vision, that means you are able to discriminate characters at 20 feet away from an eye chart that a person with normal acuity can see at a distance of 60 feet.
Of course, just because 20/20 vision is normal doesn't mean it's perfect. A small percentage of the population is blessed with vision better than 20/20, and just recently researchers unveiled corrective lens that offered vision closer to 20/10.
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