Nearsightedness can be treated by using which of the following?
- AConvex lens
- BConcave lens
- CConvex-concave lens
- DConcavo-convex lens
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (b) Concave lens
Explanation
Nearsightedness (myopia) is corrected with a concave (diverging) lens. It spreads the light slightly so that the eye focuses distant objects on the retina, not in front of it.
Farsightedness (hypermetropia) is corrected with a convex lens.