Intraocular lenses (IOLs) available at our Smithtown (Long Island) practice are Crystalens®, ReSTOR®, ReZoom™, and the AcrySof® Toric IOL lens.
DR. ZWEIBEL: Initially when we recommended cataract surgery to patients things were very simple. We simply recommended a new lens that would replace their cataractous lens that usually corrected for good distance vision without glasses.
However, now, things are a lot more involved and there are a lot more choices for the patient to make. There are lenses that are accommodative, such as the Crystalens, which actually has a single focus on it, but the lens is able to move back and forth within the eye.
When you try to focus on things up close, the lens moves forward, enabling you to read. And when you look out in the distance and the muscles of the eye relax, the lens falls further back and you're able to see clearly in the distance.
But there are also other types of lenses such as the ReSTOR lens and the ReZoom lens that are multi-focal lenses. These lenses have concentric rings on them that are dedicated to either distance or reading vision. And finally, there's another type of lens that’s available for those people with moderate amounts of astigmatism and that's the Toric lens.