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Overview

Refractive errors are the most common eye disorders. Most people have a refractive error, but it is usually too small to affect their vision significantly. For the eye to see clearly, light rays must be bent, or refracted, by the cornea and the lens and focused on the retina. The retina receives the light rays and converts them to neural signals that are transmitted by the optic nerve to the brain, where the signals are translated into images.


Like a camera, the human eye must b...Read the full article