Explain the defect called cataract.
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In old age the cornea becomes cloudy. This reduces the vision in old age. Cataract can be cured by eye surgery. Sometimes, artificial lens is also transplanted during cataract surgery. This is called Intra Ocular Lens Transplantation.
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A cataract is a clouding of the lens in the eye which leads to a decrease in vision.Cataracts often develop slowly and can affect one or both eyes.Symptoms may include faded colors, blurry vision, halos around light, trouble with bright lights, and trouble seeing at night.This may result in trouble driving, reading, or recognizing faces.Poor vision caused by cataracts may also result in an increased risk of falling and depression. Cataracts are the cause of half of blindness and 33% of visual impairment worldwide
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