Presbyopia is a vision condition in which the crystalline lens of the eye loses its flexibility making it difficult to focus on close objects.  Presbyopia may seem to occur suddenly, but the actual loss of flexibility takes place over a number of years. A natural part of the aging process of the eye, it usually becomes noticeable in the mid- to late-forties. It is not a disease and it cannot be prevented.

 

Some signs of presbyopia include the tendency to hold reading materials at arm's length, blurred vision at normal reading distance and eye fatigue along with headaches when doing close work.

 

To help compensate for presbyopia optometrists can prescribe reading glasses, bifocals, trifocals or contact lenses. Since presbyopia can complicate other common vision conditions like nearsightedness, farsightedness and astigmatism, they will determine the specific lenses to allow clear and comfortable. The lenses may only need to be worn for close work like reading, but wearing them all the time may be more convenient and beneficial.

 

Since the effects of presbyopia continue to change the ability of the crystalline lens to focus properly, periodic changes in eyewear may be necessary to maintain clear and comfortable vision.