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Usually, 20/20 vision is regarded as normal eyesight. However, it is stated to define the lucidity through which a person views something from a 20 feet distance. Whereas, 20/15 eyesight means that you may view something from a 20 feet distance, which an individual with normal eyesight might see clearly from 15 feet.
If you require glasses because your optometrist says you have 20/60 vision, that means you are able to discriminate characters on an eye chart at 20 feet that a person with normal acuity can see at a distance of 60 feet. 6/6 means the same thing only in meters.f you require glasses because your optometrist says you have 20/60 vision, that means you are able to discriminate characters on an eye chart at 20 feet that a person with normal acuity can see at a distance of 60 feet. 6/6 means the same thing only in meters.