This procedure involves the surgical removal of the natural crystalline lens, and replacement with a lens implant. It is not necessary to have a cataract to perform this procedure. The replacement lens can be a multifocal (ReSTOR), an aspheric (Technis or AcrySof IQ) or a toric lens to correct astigmatism. The primary indication for this procedure is to supply those patients who would like better uncorrrected vision, but are not candidates for laser refractive surgery.
Each of these lenses has specific benefits and risks, and each involves costs additional to conventional lens implant surgery.
Other lenses are available, and the indications for them should be discussed with your ophthalmologist.