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Near / Far Sightedness
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During normal vision, light passes through the cornea, the clear covering of the eye, and then through the pupil, which is actually a hole in the colored part of the eye, or the iris. Light then passes through the lens, which focuses the image on the retina at the back of the eye. At this point the image is converted into electrical signals that are sent to the brain.
A person who is nearsighted (myopia) sees ... more
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