When you have a cataract, the natural lens of the eye becomes cloudy, impairing your vision. In cataract surgery, the natural lens is removed and replaced with an intraocular lens implant. The natural lens of your eye is able to focus at varying distances. Multifocal lens implants contain multiple focus zones, but this newer type of lens implant is hinged so that it moves naturally with your eye muscles as your focus changes. These lenses are called accommodating lenses. Crystalens is the only FDA-approved accommodating lens in the United States.
Vision Improvements
Crystalens implants typically allow you to see up close without the need for reading glasses. In the FDA clinical trial for approving Crystalens, about 60 percent of trial participants were able to read without reading glasses after their Crystalens implant. Crystalens implants also typically allow you to see at a distance without the need for prescription glasses. However, some patients require glasses after cataract surgery regardless of the type of implant they receive--including reading glasses that they may not have needed before, or glasses for driving at night. Crystalens is less likely to produce glare and halos at night than multifocal lenses.
Appropriateness
Not every lens works for every patient. Your doctor will work with you to determine the best lens to fit your lifestyle and the physical structure of your eyes.
Expense
Crystalens implants are more expensive than more traditional fixed lens implants. They may or may not be covered by insurance.
Surgical Risks
The risks of cataract surgery do not change based on the type of implant being placed. Patients who are good candidates for multifocal lenses are typically also good candidates for Crystalens.
