ER­ROR OF REFRACTION CAUSES BLURRED FO­CUS

Science Illustrated - - HUMANS -

In case of refraction er­rors such as short-sight­ed­ness, long-sight­ed­ness, and old age, the light is not fo­cused onto the retina – ei­ther due to the eye shape or be­cause the lens is in­flex­i­ble.

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