As we age and the eyes are exposed to sunlight and other factors, the proteins in the eye lenses begin to clump together. This clouding of the eye lens is known as a “cataract.” At first, cataracts are typically small and are positioned close to the center of the lens. While both lenses are likely to be similarly affected, one may be more clouded than the other. In any case, cataracts make vision blurry and also produce glare at night. Often, people affected by cataracts may experience an increase in nearsightedness before any clouding of the lens is detected. This so-called “myopic shift” can be treated with a new eyeglass or contact lens prescription. A cataract is the clouding of the lens of the eye that is a natural part of the aging process. The number of people with cataracts is expected to grow as the population ages. It is particularly important for older drivers with symptoms of cataracts that create halos around oncoming headlights to address the problem before it creates a safety concern.