New technology is now producing premium intraocular lenses which use a method called 'accommodation' to give sharper vision at a range of distances. Currently the only FDA approved accommodating lens is Crystalens, made by Bausch and Lomb.This lens is termed an accommodating lens because it changes its position with the action of the eye muscles to give sharp vision at different distance ranges, much like the eye's natural lens would.
The brain adapts and chooses the best zone to look through to provide clear vision at all distances.
The disadvantage of these lenses is that as the limited space on multifocal IOLs must be divided into zones, some advantages of seeing through just one zone in single vision lenses are lost, such ascontrast sensitivity.
There are advantages and disadvantages to both these types of premium intraocular lenses.
Before making your final decision, be sure to discuss all your options with your eye surgeon.
During cataract surgery, tthe natural lens of the eye (which is cloudy, causing poor vision) is replaced with an intraocular lens (IOL) implant.
The standard and cheapest option is to implant a monofocal intraocular lens during the procedure, which gives great distance vision.
Most people require reading glasses as they reach middle age for this reason.
The Crystalens belongs to a select category of high tech intraocular lenses commonly called 'multifocual intraocular lenses'.
When the ciliary muscle of the eye contracts it causes the lens to move forward and the patient can focus on objects that are near.