With cataract surgery, the natural lens (which has become hazy or cataractous) is replaced with an artificial lens. The lens chosen for the surgery will determine whether one is short-sighted or long-sighted after the surgery. Although doing away with glasses is not the primary goal of cataract surgery, we usually aim for people to have good day-to-day vision (even without glasses), although this is not always the case. Glasses are typically still required for reading or for tasks involving fine vision.