As we age, our eyes’ lenses become less flexible, less transparent, and thicker. The lens is composed primarily of water and protein fibers that are arranged in a precise manner that makes the lens clear and allows light to pass through without interference. Over time, age-related changes in the composition of the lens occur, and the structure of the protein fibers breaks down. As the cataract continues to develop, the clouding becomes denser and more widespread. Everyone is at risk for developing cataracts simply because age is the single greatest risk factor. By age 65, everyone has some degree of lens clouding. The only way to know for sure is with a comprehensive eye exam. In their early stages, cataracts make images blurry and alter the purity of color.