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When cataracts reach the stage where they are seriously decreasing an individual's vision, cataract surgery is called for. In this common procedure, the doctor removes the natural lens in the patient's eye, which is replaced by a permanent lens implant. The implant is made specifically to fit the patient's

Corneal transplants are commonly used for treating two types of corneal problems. The first is kerotoconus, a disease that causes progressive thinning of the cornea. The second is excessive scarring caused by chemical burns, blunt trauma or other severe lacerations to the cornea. During the surgery,