Without a doubt, vision is the function we use most in relating to our environment. Of the many nerve fibers transmitting information to the brain, nearly 40% are inside the two optic nerves which connect the eyes to the brain.
In addition, almost all higher cerebral functions connect with the part of the brain that serves vision. If you hear a sound, you turn to look for its source. If you notice a fragrance, you look for its origin. If someone touches you on the shoulder, you look at the person, and of course, if you note an object in your peripheral field, you move your eyes to look directly at the object.
So the changes in the eye caused by aging are especially important. The chart on pages 4-5 will help you review the physical details. Here are common problems, and how to tell the expected signs of aging from the serious symptoms of a medical problem. Continue reading