A cataract forms when clouding develops in the crystalline lens of the eye. This clouding prevents light from passing clearly through the lens. Long exposure to ultraviolet light, hypertension, medications, radiation, and injury can contribute to cataracts. Common complaints may include foggy, hazy, or dirty vision, change in color vision, and even double vision. If your vision can be corrected to an acceptable level with a change in prescription, then eyeglasses or contacts may be prescribed. If your vision cannot be corrected and the cataract(s) interfere with your daily life, then you would be considered a candidate for cataract surgery.