During cataract surgery, a small ultrasonic probe is inserted into the eye which breaks up, or emulsifies, the cloudy lens into tiny pieces and gently sucks, or aspirates, those pieces out of the eye. Phaco surgery requires a small incision of only 2.8 mm or less. To make your procedure as painless as possible, anesthesia is a combination of local and/or topical along with IV sedation.
With the recent advance of foldable IOLs, artificial lenses can be implanted through the same small incision that is created in the phaco procedure. These IOLs are made of a flexible material, allowing them to be folded for implantation. Once inside the eye, the lens unfolds and returns to its original shape.
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 driving aid.
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.
Multifocal Presbyopic Correcting Lens Implants
Alcon ReSTOR® Lens
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.
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.