Defects of Eye — MyopiaMediumQuestion 20234
Question
A myopic (short-sighted) person uses which lens for correction?
- AConvex (converging)
- BConcave (diverging)Correct
- CCylindrical
- DBifocal only
Correct answer
Concave (diverging)
Explanation
Myopia: distant objects focus in front of the retina (eyeball too long). A concave lens diverges the incoming rays so they focus exactly on the retina. Power of lens: P = −1/far_point (in metres).