Shifting Between Reading And Far Vision Through Using Lasik To Create Monovision

Many people are having Lasik and other surgery to their eyes. This results in better vision but many people get hit with a sudden bout of presbyopia, the inability to see close objects clearly when reading. This can and does occur after the eyes have been treated and successfully corrected with Lasik.

This can be corrected by wearing, again, the old reading glasses. This is a difficult problem to cure, even with the miraculous science of lasik vision correction. One tactic developed is to deliberately induce in the patient the phenomenon called Monovision. This is the idea to target the Lasik Surgery so that one eye is purposely myopic, that is nearsighted and can be used well for reading. The other eye is either left alone, or surgically changed with lasik or other treatments to become hyperopic, that is far-sighted, so it can be used for walking around, driving and other more long distance vision tasks. A certain amount of nearsightedness can be induced in the non-dominant eye by a number of methods. The dominant eye is not corrected, since it is providing the best vision on all distance levels. The only problem this leaves, using Monovision, is for certain tasks like driving , or if you want to, for example, paint a picture, it is important to have depth perception, which is obtained by having the two eyes work together. So patients may end up getting rid of their reading glasses, but having to get an extra pair of glasses for full vision and enhanced depth perception.

Monovision can be achieved in a number of ways. It can be achieved directly by using contact lenses. It can be achieved with a procedure called NearVision CK, which uses radio waves to change the shape of the cornea and create some near-sightedness in the non-dominant eye. This effect diminishes over time but can last for years. Lasik can also be used to create monovision by correcting the dominant eye with wave-front guided lasik, and the other eye with conventional lasik, that is conventional laser ablation, which aims to leave it slightly nearsighted. After six to eight weeks the brain adjusts for the changes of vision of the two eyes and automatically shifts between the eye for far vision and the eye for near vision. Thats how Monovision works