The lens inside the eye changes shape when we look at an object up close. When we focus up close the lens becomes thicker and as we look into the distance, the lens becomes thinner.
Presbyopia occurs when the lens inside of the eye loses its flexibility. The symptoms occur around age forty, are a normal part of the aging progress and include blurred vision with up close tasks such as reading. You may also notice difficulty changing focus from near to far.
If you are nearsighted, you may be able to take off your glasses and see better up close. If you are not nearsighted, you will need reading glasses or bifocals to see well up close.