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English: A cataract is a clouding of the lens inside the eye which leads to a decrease in vision. It is the most common cause of blindness, and is conventionally treated with surgery. Visual loss occurs because opacification of the lens obstructs light from passing and being focused on to the retina at the back of the eye.


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Media in category "Cataracts"

The following 9 files are in this category, out of 9 total.