A cataract is a very common eye condition in which the lens inside of your eye, which is usually clear, becomes cloudy or opaque. For some, cataracts are barely noticeable. For others however, cataracts can become severe and significantly reduce your vision. People with severe cataracts will notice a decrease in the clarity of their vision that cannot be improved with glasses. They may also notice a loss of sensitivity to color, shadows, and disturbing glare.
Cataracts are typically not treated unless they are impacting your vision. If treatment is necessary, your optometrist will refer you to an Ophthalmologist (an eye surgeon) to have the cataract removed.