Presbyopia refers to a state of condition in which the lens of the eye loses its capacity to focus on viewing close objects. Evidently, people experience mistiness of vision while reading, sewing or working at the computer. Generally, Presbyopia is caused at around the age of 40.
The advancement of age sets in the problem of Presbyopia. Nobody is immune to Presbyopia, even if one has no past history of having a vision problem.During the myopic stage people begin to have a dim view of objects that are at near distance. As a result, people put on eyeglasses or contact lens to have precise distance vision.
The instances of Presbyopia can be seen in a bigger way in the United States. According to the statistics of U.S. Census Bureau data, US citizens numbering in excess of 135 million were affected with Presbyopia when they entered 40 years of age in the year 2008.
The first signs of Presbyopia are vividly palpable when people feel that they need to keep books, magazines, newspapers, menus and other reading materials close to their chest so that they can have proper focus. Additionally, when they are engaged in executing near work, such as embroidery or handwriting, they tend to get either headache or eye strain or feel fatigued. Also, Presbyopia causes pain in the eyes.
Presbyopia is caused by genetic and environmental factors. Generally, Presbyopia is believed to sprout by a steady thickening and loss of flexibility of the natural lens inside the eye.
Age-associated changes take place within the proteins in the lens, making the lens harder and less elastic over time. Further, age-related variations take place in the muscle fibers surrounding the lens.
There is no specific treatment to stop Presbyopia from affecting one. But, wearing customised eyeglasses with bifocal or progressive addition lenses (PALs) can prove to correct the problem. The other solution available for Presbyopia is multifocal contact lenses Monovision is yet another prescribed form to correct the contact lens. Wearing Monovision-supported contact lens enables the eye to have a clear view of distance objects whereas the other eye takes the vision of near side objects.
Surgical intervention is another method availableto treat Presbyopia. Some companies provide an effective treatment which can improvise near vision. In this treatment, radio waves are sent to generate more curvature in the cornea. However, this procedure is adopted to treat one eye only for a monovision correction. Alternatively, laser eye surgery can also be performed to deal with the problem of Presbyopia.
There are four types of Presbyopia such as: