What is the Tecnis® Multifocal Acrylic Intraocular Lens?
The Tecnis® multifocal intraocular lens is an ultraviolet light-absorbing intraocular lens that is used during cataract surgery to replace the cloudy lens (cataract) and provide distance and near vision with less dependency on glasses.
How Does the Tecnis® Multifocal Acrylic Intraocular Lens Work?
The first intraocular lenses made only had a single strength or power. This provided the patient with good vision for only one distance after cataract surgery (as long as the patient did not have any astigmatism). The Tecnis® lens provides vision for distance and near vision by focusing two different images onto the retina using diffractive technology, one for distance and one for near.
Other Features of the Tecnis® Intraocular Lens
Patented wave-front aspheric anterior surface design which reduces spherical aberrations to nearly zero which provides improved vision quality
Provides a reduction of chromatic aberration for better quality of vision
One piece design which allows for easy insertion and stability inside the eye
Warnings and Precautions for the Tecnis® Lens
Multifocal intraocular lenses are associated with glare, halos, or rings around lights at night. This improves over time and seldom do patients have significant problems with the glare.
In reduced lighting conditions contrast sensitivity may be reduced. This is the ability to distinguish a gray line from a darker shade of gray line. The vision may not be as good in poor light conditions due to the decreased contrast sensitivity.
Night driving testing shows that patients with the Tecnis® intraocular lens was less than a 25% loss for most distances.
Patients with prior eye disease such as chronic inflammation, severe glaucoma, Fuchs’ dystrophy (corneal endothelial disease), significant diabetic retinopathy, prior refractive surgery and patients with only one eye with potentially good vision may not be good candidates for this lens.
Patients with significant astigmatism may not have good vision after surgery without wearing glasses.
Clinical Study Results for the Tecnis® Multifocal Acrylic Intraocular Lens
Binocular Uncorrected Distance Vision
20/40 or better 98.6%
20/32 or better 95.9%
20/25 or better 83.3%
20/20 or better 56.1%
Monocular Uncorrected Near Vision
20/40 or better 95.8%
20/32 or better 85.8%
20/25 or better 56.3%
20/20 or better 26.2%
The Tecnis® multifocal acrylic intraocular lens provides excellent results after cataract surgery, allowing patients to see distance, intermediate, and near vision without glasses. Clinical studies indicate that 94.6% of patients would have the Tecnis® lens implanted again. There are some complaints of glare, halos, or rings around light at night, decreased contrast sensitivity with trouble seeing in poor light. You should have healthy eyes other than cataracts when choosing this type of intraocular lens. Make sure you discuss with your eye doctor the alternatives and what is best for you.