Just as our physical strength decreases with age, our eyes also exhibit an age-related decline in performance — particularly as we reach our 60s and beyond. Some age-related eye changes, such as presbyopia, are perfectly normal and don't signify any sort of disease process. While cataracts can be considered an age-related disease, they are extremely common among seniors and can be readily corrected with cataract surgery. Some of us, however, will experience more serious age-related eye diseases that have greater potential for affecting our quality of life as we grow older. These conditions include glaucoma, macular degeneration and diabetic retinopathy.
Presbyopia. After you pass the milestone age of 40, you'll notice it's more difficult to focus on objects up close because of presbyopia. This is a perfectly normal loss of focusing ability due to hardening of the lens inside your eye.