How is PresbyLASIK Different from LASIK for Monovision?

Both monovision LASIK and presbyLASIK are attempts to provide good vision at both distance and near for people over 40 who need reading glasses. Monovision LASIK is a monofocal treatment for each eye. Each eye is treated to see best at one distance (generally one eye for near and the other eye for distance). PresbyLASIK is one variety of multifocal LASIK treatment that causes the same eye to focus at both distance and near at the same time. The disadvantage to... more

PresbyLASIK is not yet FDA approved, it is being investigated by VISX in Canada, which is FDA-free. the problem w presbyLASIK is it puts a multifocal zone on both eyes, so both eyes get a mixed signal. in other words, each eye gets a simultaneous signal for both distance and near. this results invariably in decreased contrast sensitivity, which can cause some night driving problems. monovision, on the other hand, provides a crisp signal to each eye, one distance, one... more

PresbyLASIK is a procedure which is performed to enable individuals to see at distance and up close and used to treat nearsightedness, farsightedness, and/or astigmatism in combination with presbyopia, or the loss of near vision when we reach our 40's. PresbyLASIK is not FDA approved and has not been used extensively in the U.S. but is the combination of two, FDA approved procedures. It involves creating a multifocal cornea on your eye. In monovision or blended vision,... more