Multiple choice

Which type of lens is used for correcting astigmatism?

  1. Concave lens

  2. Convex lens

  3. Plane lens

  4. Cylindrical lens

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Astigmatism is caused by an irregular curvature of the cornea or lens, making vision distorted at all distances. Cylindrical lenses have different curvatures in different directions and can correct this irregularity. Concave and convex lenses have uniform curvature, while 'plane lens' is not a standard optical term.

Keep practicing — related questions