Question

For the myopic eye, the defect is cured by

• A. Convex lens
• B. Concave lens
• C. Cylindrical lens
• D. Toric lens

Answer 1

Answer: (B)

Concave lens

Answer 2

In myopia, $v = d =$distance of far point

By $\frac { 1 } { f } = \frac { 1 } { v } - \frac { 1 } { u }$ we get $f = - d$

Since f is negative, hence the lens used is concave.