An accomodating lens implant can focus at variable distances with the ability to shift position in the eye and change focus points, just as your natural lens did when you were younger. This often allows for very good distance and intermediate vision without corrective lenses. Because of the advanced nature of this lens implant, there is an additional cost beyond what your insurance would normally pay.
An accomodating lens implant is designed to be an artificial replacement for your eye's natural lens. Like multifocal lenses, they can be used both as the replacement lens in cataract surgery and for people who elect to replace their natural lens through a procedure called refractive lensectomy.
Accomodating lenses, like the Crystalens, are designed to provide a continuous range of vision for distance, intermediate, near and everything in between, eliminating or reducing patients' dependence on reading glases or bifocals after cataract surgery.
This is made possible by the unique hinged structure of the lens, which allows the optic, or the part of the lens that you actually see through, to move back and forth as the muscles in your eye constrict and relax.