A cataract is a clouding of the lens in the eye. The lenses may cloud slowly enough that you may not notice it until it is nearly completely developed. Generally people get cataracts in both eyes, although the eyes may cloud at different rates. Cataracts can also exist at birth, or can be caused by an injury or by diseases such as diabetes. Some common symptoms are blurring of vision and glare.
Early cataracts can also cause difficulty when driving at night.
More advanced cataracts cause a dulling of colors. Cataract causing the scattering of light as it enters the eye Blurring of vision caused by a cataract Dulling of colors caused by a cataract Cataracts can occur in different areas of the lens. Sometimes cataracts start developing at the edges of the eye and spread inward. These types are commonly not symptomatic until they are fully developed. Cataracts that form first in the center of the lens are often the most bothersome.