How does presbyopia affect vision?
At birth the lens is soft and flexible, and its shape is easily controlled by the zonules. As we age, however, the lens gradually hardens and becomes resistant to changes in shape. Since the older lens cannot change shape as easily as it once did, the eye has increasing difficulty focusing. This loss in focusing ability, or presbyopia, results in blurred or distorted vision when looking at close objects. What causes presbyopia? Presbyopia is a natural result of the aging process. Everyone will eventually experience some degree of presbyopia, beginning about the age of forty. In fact, presbyopia is one of the most predictable, routine age changes that occurs in the human body. What are the symptoms of presbyopia? The most common symptoms of presbyopia are blurred vision of near objects and difficulty doing close work. Many people find reading difficult and hold the material farther away in an attempt to see more clearly. A slowness in changing focus from near vision to distance vision m
