A cataract is the clouding of the eye’s natural lens that lies between the iris and the pupil. Cataract surgery is performed to remove the clouded lens and replacing the lens with a permanent implant. This implant is known as an intraocular lens implant (IOL). This surgery usually results in a return to normal vision. It is the most common surgery performed in the United States. The surgery is usually performed on an outpatient basis by an ophthalmologist.

Cornea transplant surgery is performed when the damaged or diseased disc-shaped area of the cornea is replaced with a healthy similar-sized area of donor cornea. Some conditions that can cause the deterioration of the eye are keratoconus, bullous keratopathy, Fuch’s dystrophy, and herpetic eye disease. Sometimes transplantation is necessary due to trauma or perforation to the cornea. Cornea transplants are one of the most frequently performed transplantation with over a 90-percent success rate. The surgery is performed by an ophthalmologist in an outpatient setting using a local anesthetic.