A cataract is a clouding of the natural lens inside your eye. This lens, located behind the iris, works just like the lens of a camera – focusing light images on the retina, which sends images to the brain, The human lens can become so clouded, it keeps light and images from reaching the retina.
A cataract can be the reason sharp images become blurred, bright colors become dull, or seeing at night is more difficult. It may also be why the reading glasses or bifocals that used to help you read or do simple tasks no longer seem to help. The best way to treat a cataract is with surgery what removes the old, clouded lens and replaces it with a new, artificial one to restore your vision.
Traditionally, the surgeon would accomplish these tasks by ?making a tiny incision in the eye and then using an instrument about the size of a pen tip. Now patients also have the option of choosing a bladeless, computer-controlled refractive cataract laser to perform several of the most critical steps of cataract surgery.