Of the vast majority of patients who have cataract surgery, only a small number experience complications. Infection, bleeding and retinal swelling or detachment might occur. Also, glaucoma, corneal clouding or loss of an eye are some of the more serious, but rare complications.
Those most at risk for complications include alcoholics, substance abusers, diabetics, and people with glaucoma, high myopia or vascular disease. If your eye is healthy before the surgery, the likelihood is that the surgery will be successful.