Update on cataract surgery and replacement lenses
Each of our eyes comes equipped with a lens tucked behind the pupil that focuses light on the retina in the back of the eye. When we're young, those lenses are quite clear. But with age and exposure to light and other harmful factors, they have a tendency to cloud up, as the proteins in the watery mixture inside the lens clump up. Clouding of the lens is called a cataract.
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