As people reach age 40, they tend to start losing their reading vision. Someone who is wearing contact lenses or glasses will need to get reading glasses or bifocals. With Laser Vision Correction - LASIK or PRK - patients are offered ‘Monovision’. This means one eye is fully corrected for distance, while the non-dominant eye is left a little under corrected to see things up close. The brain integrates the visual information from both eyes and adjusts either immediately or within a few weeks to having each eye focus at a different distance. Most people tolerate this very well and can function most of the time without glasses.  Another way to give someone both distance and near vision, is with a Refractive Lens Exchange. A multifocal intraocular lens (IOL) or an Extended Range of Vision IOL can correct both distance and reading vision. These lenses have the potential to give excellent distance and reading vision in both eyes.