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20/20 imagination means your optic can see what the average human eye sees clearly at 20 foot .
If your eye can perceive physical object at 20 feet that the average eye must be at 15 feet to see as clearly , then that middle has 20/15 vision . You should be so lucky — most Americans are nearsighted or farsighted to some point . That is , either they see near object intelligibly but not distant objects ( myopia , or nearsightedness ) or vice versa ( prospicience , or hyperopia ) .
Perfect vision is described as 20/20 vision.
Refractive surgery can correct for myopic vision by change the shape of thecornea . But with potential side effects , such as pain , light sensitiveness and optical distortion , and a humble jeopardy of even more serious eye problems , I ’ll wedge with spectacles .
