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Nearsightedness, or myopia, as it is medically termed, is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness occurs if the eyeball is too long or the cornea, the clear front cover of the eye, has too much curvature. As a result, the light entering the eye isn’t focused correctly and distant objects look blurred.======

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People with hyperopia or farsightedness can see distant objects very well, but have difficulty focusing on objects that are up close.This vision problem occurs when light rays entering the eye focus behind the retina, rather than directly on it. The eyeball of a farsighted person is shorter than normal.Many children are born with hyperopia, and some of them "outgrow" it as the eyeball lengthens with normal growth.======