Cataract Surgery is a procedure used to remove the natural lens in the eye when it becomes clouded. The natural lens is replaced with a plastic, artificial lens that is permanent, requires no care, and can significantly improve vision. Newer artificial lenses may have the natural focusing ability of a young lens, allowing for distance and some near vision, as well. Cataract removal is one of the most frequently performed surgical procedures in the world. The surgery is typically an outpatient procedure that takes less than an hour.