Question

explian astigmatism
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Answer 1

Answer:

Astigmatism (uh-STIG-muh-tiz-um) is a common and generally treatable imperfection in the curvature of your eye that causes blurred distance and near vision. Astigmatism occurs when either the front surface of your eye (cornea) or the lens, inside your eye, has mismatched curves.

Answer 2

Hi friend_______,

★ In this defect, the eye cannot see parallel and horizontal lines clearly.

★ It may be inherited or acquired.

★ It is due to the imperfect structure of eye lens due to the development of cataract on the lens, ulceration of cornea, injury to the refracting surfaces etc..

★ It is corrected by cylindrical lenses (Torrid lenses).

Thank you..