Multifocal IOLs allow for full vision correction at near, intermediate and far distances, completely eliminating the need for eyeglasses or contact lenses for most patients. Some IOLs can also correct astigmatism. The procedure to implant a multifocal IOL is performed at the conclusion of cataract surgery.
These choices were not always available for cataract patients. In the past, cataract surgery only involved monofocal lenses, which could only focus on objects near or far, but could not adjust to accommodate varying distances. These patients still had to rely on glasses or contact lenses after surgery in order to see clearly at all distances, especially for those older patients suffering from presbyopia.
Multifocal IOLs such as ReSTOR®, ReZoom® and Tecnis® preserve distance vision and correct presbyopia so cataract surgery patients -- and patients seeking treatment for presbyopia alone -- can enjoy clear sight without relying on glasses.
The AcrySof® IQ ReSTOR® IOL is an intraocular lens that provides good near, intermediate and distance vision for patients who want to significantly decrease their dependence on glasses or contacts after undergoing cataract surgery.
The biconvex optic of the ReSTOR IOL is shaped during a process known as apodized diffraction. Apodized diffraction provides the patient with an increased depth of focus.
- Unlike other IOLs that are made of silicone or hard plastic, the AcrySof® IQ ReSTOR® IOL is a soft, foldable acrylic lens.
- There is no need for stitches because a smaller incision is made in the eye.
- The ReSTOR IOL corrects for both cataracts and presbyopia.
- The implant filters blue light without affecting the quality of vision.
Tecnis® Multifocal IOL
The Tecnis Multifocal IOL can be used for those patients with or without presbyopia who want to have near, intermediate and distance vision without relying on glasses or contact lenses. Cataract surgery, which replaces the eye's cataract-impaired lens with an artificial clear lens, also known as an intraocular lens, or IOL, is the most commonly performed surgical procedure in the United States.
The Tecnis IOL was designed to provide cataract surgery patients with a high-quality vision similar to that of a younger person. The Tecnis IOL is meant to improve functional vision - the ability to see objects in varying light conditions - especially at night and twilight and in rain, snow and fog. This means improved night vision and reduction of spherical aberrations, an undesirable scattering of light that is a common side effect of cataract surgery.
Unlike other multifocal IOLs, the Tecnis Multifocal IOL provides the following benefits:
- Excellent vision at all distances
- Excellent vision at all light levels
- 90 percent of Tecnis Multifocal IOL patients do not require reading glasses