When a cloudy area develops within the normally clear lens of your eye, it is called a cataract. Cataracts normally occur gradually with aging due to composition changes in the lens, but can also be caused more quickly by trauma, environmental triggers, and rarely due to congenital origins. Indications that a cataract may be forming include haziness and blurred, distorted or even double vision; an increasing need for more light; and sensitivity to bright light and glare, especially at night. During your eye examination, your optometrist will analyze for any opacity in the lens of your eye, to determine if you are developing a cataract.