Information On Causes And Solutions For Presbyopia
Date: Saturday November 21, 2009Posted in: Health
Meaning “elderly eye” in Greek, presbyopia is an eye condition that mostly affects people from the age of forty years and upwards. The main symptoms are blurred vision when carrying out an activity such as reading a book or using a computer. Unfortunately, presbyopia cannot be prevented, but the symptoms can be controlled to an extent.
Most people that suffer from presbyopia first realize that something is wrong when they start having to read a book or newspaper at arms length as when they are held any closer the words just appear all fuzzy. If the individual tries to strain their eyes to focus then they are likely to experience headaches.
The causes for presbyopia are different than those that cause farsightedness, nearsightedness, and astigmatism. These eye complaints are mostly due to genetic factors or an irregular shape in the eyeball, while presbyopia is due to a change in the proteins present in the eye lens resulting in a thickening of the layer. Also it can be due to a weakening in the muscle fibers that surround the lens which causes a loss of elasticity.
To treat presbyopia and correct the vision it is possible to use eyewear or undergo surgery. If you choose eyewear then you can be given bifocal lenses or progressive addition lenses.
Bifocal lenses work by having two different strengths within a single lens - the main part has a prescription to improve distant vision and the lower part has a strength to improve up close vision. If you would prefer a more natural progression in the lens from one strength to the other then progressive addition lenses would be better for you.
Some people may choose just to wear reading glasses when they need to focus on any matter that is within an arms length. These are fine if the distant vision is not a problem. They can also be worn by people who wear contact lenses but also suffer with presbyopia.
As people age the deterioration in the vision caused by presbyopia is likely to worsen, so whatever eye glasses are prescribed will have to be altered every now and then.
It is now also possible to have surgery to counter balance the problems caused by presbyopia. One such option is Conductive Keratoplasty treatment; this involves an alteration of the curvature of the cornea through the application of radio waves. Another method is LASIK surgery, this changes the shape of the cornea through laser pulses.
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