In old age, the crystalline lens of some people becomes milky and cloudy. What is this condition called?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Cataract
In cataract, the crystalline lens of the eye becomes milky and cloudy, which causes partial or complete loss of vision. Sight can be restored by cataract surgery.
Why the other options are incorrect
Option (1) Hypermetropia — Incorrect. This is far-sightedness: near objects look blurred; it is corrected with a convex lens.
Option (2) Myopia — Incorrect. This is near-sightedness: distant objects look blurred; it is corrected with a concave lens.
Option (4) Presbyopia — Incorrect. This is the weakening of the ciliary muscles with age, so near objects are hard to focus; the lens does not turn cloudy.