Advanced Cataract Surgery - Lens Implants
Cataract surgery, which replaces the eye's cloudy lens with an artificial clear
lens (called an intraocular lens, or IOL), is the most common operation in the U.S. More than half of
adults over age 65 have some degree of cataract development. People 65 and older are also more likely
to be involved in car crashes than people in their 30s, 40s and 50s. Now an innovative night vision-enhancing
IOL can help elderly drivers with cataracts avoid accidents.
The Tecnis IOL was designed to provide cataract surgery patients with
high-quality vision comparable to that of young people. It 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.
The lens was approved as an IOL by the FDA in 2002. In April 2004 it was approved again as a
In tests, drivers 65 and older wearing a silicone Tecnis™ lens were able to recognize objects faster,
improving their braking response time by half a second and stopping about 60 feet shorter than drivers
wearing traditional acrylic lenses.
For more information on Tecnis™ Lens, click here.
Click here to view an animation on Intraocular Lens Implants.
Multifocal Presbyopic Correcting Lens Implants
Dr. Foreman has been using flexible Acrysof® IOLs for years to replace the eye's cloudy lens during cataract surgery and help patients enjoy clear vision again. The ReSTOR® lens improves upon the ordinary IOL by using apodized diffractive technology to provide a full range of focusing distances from near to far. A series of 12 gradual "step heights" of 0.2-1.3 microns each (thinner than a human hair and smaller than a red blood cell) in the center of the IOL create seamless focusing ability, while the peripheral refractive region helps to enhance distance vision. Apodization also allows the lens to work with the pupil to distribute light evenly in the eye in different lighting conditions and activity levels. Alcon® reports that up to 80% of patients who use the ReSTOR lens don't need glasses after surgery.
For more information on ReSTOR® Lens, click here.
Click here to view an animation on ReSTOR® Lens.
What is Presbyopia?
The ReZoom™ multifocal intraocular lens (IOL) helps patients focus clearly on objects at a range of distances and in varied light conditions, so they can be free of glasses or contact lenses after cataract surgery. The ReZoom™ lens features five spherical segments with smooth transitions in between so the eyes focus seamlessly from one distance to the next. The center of the lens is optimized for bright light and distance vision, while the fourth zone supports near-vision in a variety of light conditions, and the outermost zone accommodates for low-light distance vision (such as when driving at night). The ReZoom™ is also specially designed to reduce internal reflections and minimize glare.
For more information on ReZoom™ Lens, click here.
Click here to view an animation on ReZoom™ Lens.