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Astigmatism can be corrected by using...

Astigmatism can be corrected by using

A

culindrical lens

B

plano convex lens

C

plano concave lens

D

convex lens

Text Solution

Verified by Experts

The correct Answer is:
A
In this defect, eye cannot perpendicular direction clear, i.e. horizontal and vertical lines simultaneously. It is due to imperfect spherical nature of eye lens. This defect can be removed by using cylindrical lenses. (Torric lenses)
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DC PANDEY ENGLISH-RAY OPTICS-Medical entrance gallary
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