Defects of Eye — HypermetropiaMediumQuestion 20235
Question
A hypermetropic (long-sighted) person uses which lens?
- AConcave
- BConvex (converging)Correct
- CPlano-concave
- DNo lens needed
Correct answer
Convex (converging)
Explanation
Hypermetropia: near objects focus behind the retina (eyeball too short). A convex lens converges rays before they enter the eye so the eye can focus on the retina. Power = 1/near_point − 1/D.