What is a cataract?
A cataract is a clouding of the normally clear and transparent lens of the eye which lies behind the pupil. When the lens becomes cloudy from age, injury or a birth defect, less focused light reaches the interior of the eye and vision gradually fails. Cataracts may take years to form, or they may worsen rapidly over a few months. A cataract is the most common cause of poor vision that cannot be corrected by glasses.
A cataract is an opacity or cloudiness of the lens of the eye. The lens is a structure inside the eye, which acts, like the lens of a camera, to help us focus on near objects. A cataract can be a tiny dot, which does not cause much vision problem, or could involve the whole lens (making it look white) that will cause nearly complete blindness.
