Cataract is a clouding of the normally clear lens in the eye. This blocks the light from reaching the retina and causes unclear vision. As the cataract progresses, it causes hazy vision and may interfere with your daily activities. Cataract usually develops in people older than 45 years of age and as the vision deteriorates, the only available treatment for cataract is surgery.
In cataract surgery, the lens inside your eye that has become cloudy is removed and replaced with an artificial lens (called an intraocular lens, or IOL) to restore clear vision. The procedure typically is performed on an outpatient basis and does not require an overnight stay in a hospital or other care facility.