Monovision is a technique to reduce the need for reading glasses or bifocals by working around presbyopia. Monovision can be accomplished with LASIK or contact lenses.

The need for near vision lenses is almost universal for people as they enter their middle years. As we mature, the natural crystalline lenses in our eyes become firm, enlarged, and will lose flexibility. This naturally occurring event will decrease the ability of the crystalline lens to vary its shape for different ranges of focus. This condition is known as presbyopia and is most often first detected in people between 40 and 50 years of age. A sure sign of presbyopia is when you cannot read without holding the item far away from you. For many, distance vision remains relatively unaffected by presbyopia.