Cataract is a common eye condition in all areas of the world that generally affects adults 55 years of age and older. Cataract is a clouding of the natural lens inside the eye. It is a gradual loss of transparency of the lens that causes clouding. Because of this, light becomes distorted and fails to reach the back of the retina for proper formation of the image on the retina. If not treated properly, it can lead to blindness.