The pupil lies inside the iris, a larger ring of muscular fiber that gives the eye color, and over the lens. A surgeon can then more easily reach the lens to break it up using sound waves and extract the pieces with a gentle vacuum. The procedure is delicate, yet highly successful. Cataracts can be caused by injury to the eye and reactions to medications, but they usually occur as the result of natural aging processes. Today, cataracts are typically removed in an outpatient procedure, using local anesthesia.
Patients can then resume their normal activities in a matter of days.
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