Question

What is cataract? Explain with diagram. How is it treated? Mention two causes.

Answer 1

Each point: 1 Mark
Diagram: 2 Marks



1.

2. Sometimes, particularly in old age, eyesight becomes foggy. It is due to the eye lens becoming cloudy. When this happens, a person is said to have cataract.
3. It is possible to treat this defect. The opaque lens is removed and a new artificial lens is inserted. Modern technology has made this procedure much simpler and safer.
4. Examples- Old age and Diabetes