Presbyopia is a condition in which the eyes are not able to
focus on near objects. This usually happens around age
40, when the eye begins to lose its ability to change the
shape of the lens so it can focus on near objects (accommodation).
Presbyopia is a normal part of
aging that affects most people. Besides a decreased ability to focus on near
objects, symptoms include eyestrain and headaches.
contact lenses usually can improve this condition. As the ability to focus up
close gets worse, the prescription needs to be changed.
Surgery may also help some people.