Question

What is astigmatism? How this defect is corrected?​

Answer 1

Answer:it can be corrected by using cylindrical lens

Explanation:

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..