A cataract is a clouding of the natural lens inside your eye. This lens, located behind the iris (or colored part of the eye) works just like the lens of a camera: lightimages are focused on the retina, then the images are sent to your brain. The human lens, made mostly of protein and water, can become clouded — so clouded it keeps light and images from reaching the retina. Eye injury, certain diseases, or even some medications can cause the clouding. But, in more than 90 percent of cases, clouding is caused by the aging process. A cataract is not a "film" over the eye, and neither diet nor lasers will make it go away. The best way to treat a cataract is to remove the old, clouded lens and provide a replacement. | 
