A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.
Cataracts develop when the natural lens of the eye becomes cloudy due to age, injury, or other eye diseases. This lens is responsible for focusing light on the retina, so a cataract would cause the amount of light reaching the retina to diminish. Most of the time, cataracts develop slowly over time, causing vision loss and potential blindness if left untreated. Cataract surgery is one of the most common and successful surgical procedures in the world, restoring vision in patients and allowing them to continue their lives unhindered. Many patients notice immediate results following their surgery.