Multiple choice

Astigmatism is corrected with the help of

  1. concave spherical lenses

  2. cylindrical lenses

  3. bifocal glasses

  4. convex lenses

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

Astigmatism is a refractive error caused by an irregularly shaped cornea or lens. Cylindrical lenses are used to correct this by providing different refractive powers in different meridians.