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Question
What is cataract? Explain with diagram. How is it treated? Mention two causes.
What is cataract? Explain with diagram. How is it treated? Mention two causes.
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Solution
Each point: 1 Mark
Diagram: 2 Marks
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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
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
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