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4. What are cataracts?ataracls ale |
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Answer» The crystalline lens of some people during old age, becomes hazy or even opaque due to the development of membrane over it. This condition is called cataract. The vision can be restored after getting cataract surgery. The cataracts of the Nile are shallow stretches between Aswan and Khartoum where the water's surface is broken by numerous small boulders and stones that lie on the river bed, as well as many small rocky islets. |
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