Cataract And Phaco

A cataract is a clouding of the natural lens in the eye that affects vision.  The lens is a clear part of the eye that helps to focus light, or an image, on the retina. The retina is the light sensitive tissue at the back of the eye. In a normal eye, light passes through the transparent lens to the retina. Once it reaches the retina, light is changed into nerve signals that are sent to the brain. The lens must be clear for the retina to receive a sharp image. If the lens is cloudy from a cataract, the image will be blurred.