Astigmatism for a human eye can be removed by using

Question

G1 Physics · Accepted Answer

Derived solution: Step 1: Use the thin-lens relation for the correcting lens and the eye defect: a convex lens corrects hypermetropia, a concave lens corrects myopia, and a cylindrical lens corrects astigmatism. Step 2: Substitute the values given in the question and apply the geometry/sign convention shown. Step 3: On simplification the result is cylindrical lens. Therefore the correct option is C.