A cataract is a clouding of the 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 lens must be clear for the retina to receive a sharp image. As a cataract develops, clumps of protein reduce the sharpness of the image reaching the retina.
The clear lens slowly changes to a yellowish/browish color adding a brownish tint to vision. Symptoms of cataract include cloudy or blurry vision, faded colors, glare from headlights or a halo around them, and poor night vision.
