Lenticular Sclerosis -------------------- General Information The lens bends light rays to produce a sharply focused image upon the retina. Lenticular sclerosis (hardening of the lens) results from normal aging. It does not cause blindness, though in advanced cases normal vision is diminished. New lens fibers are constantly being formed by cells in the outer portion of the lens. As new fibers appear, older fibers are pushed toward the lens center. As the years go by, more and more fibers become compressed within the lens center. Unfortunately, the crystal-clear lens is obscured by the compressed fibers. The lens becomes gray, and the once-clear pupil appears cloudy. Animals usually retain enough vision to function well within a familiar environment. No treatment is required unless a true cataract forms, in addition to the lenticular sclerosis. Notify the Doctor if Any of the Following Occur: * Your pet begins to bump into objects. * Your pet's eyes look strange or different.