Traditional Presbyopia Correction

Presbyopia (pronounced prez-bee-uh-pee-OH) is one of vision disorders where the lens of the eye does not easily change the focal length. Normally, we can easily change the focus of a book on the horizon, a tree in the backyard, and back to the book, and everything will be in clear focus. This is called eye accommodation.

Presbyopia (literally means "aging vision) affects everyone at some point after 40 years of age, making it difficult to focus on close objects or reading small print.

Three traditional remedies
1. Glasses
Traditionally, people with presbyopia have used corrective glasses - reading glasses, bifocals or progressive lenses - to see things clearly at a close distance.

Reading glasses (used only for reading and close work) simply extend whatever you're looking person
Bifocals are two different recipes, one for improving near vision and one for distance vision improved, and there is a clear dividing line
Progressive lenses gradually move from one recipe to another. They can be trifocal, with three prescription strengths, being the central intermediate distances. There is no sudden leap of a prescription to another, since glass is made with smooth transitions.
Many stores sell generic reading glasses below a certain strength. For the glasses you need to visit an eye doctor and get a prescription.

2. Contact lenses
Some people prefer to wear contact lenses to glasses, and has not traditionally been three options.

Bifocal contact lenses - They work much like bifocal eyeglasses
multifocal lenses - These provide multiple points of focus for a natural transition from near to far distance vision. There are many variations available.

Monovision contact lenses - These work on a different principle. They use the dominant eye for distance vision and the nondominant eye for near vision. It is better for an ophthalmologist to determine which eye is used for vision, but often right-handed people are right-eyed people are the key and left-handed left eye dominant. Although there is always an adjustment period for people new to monovision lenses, in general the brain gets used to the transformation of two different images in an appropriate manner.

3. Monovision LASIK
LASIK procedures they've helped many people with the three vision problems of myopia (nearsightedness), hyperopia (farsightedness) and astigmatism (irregular curvature of cornea). But the standard treatment does not correct presbyopia.

Why not? Because presbyopia is not caused by problems of curvature of the cornea. LASIK procedures change the curvature of the cornea to correct vision while presbyopia is an objective problem. But if LASIK is done differently in every eye, which can help with presbyopia.

LASIK Monovision corrects one eye for near vision, and then exits the other eye may be, for distance. The brain relearning how to use the information from each eye. The use of intraocular lenses

An increasingly popular method of presbyopia correction is the clear objective of Exchange, where the lens is removed and replaced with an artificial lens.


See related article:
Natural Vision Improvement