Multifocal Lens Implant (Tecnis® IOL, Toric™, Crystalens™)
Manufactured by Abbott Inc., the Tecnis® IOL was designed to provide cataract surgery patients with high-quality vision comparable to that of young people. Its main concern is improving safety with vision correction. 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.
Intraocular lenses are used to correct vision problems during cataract surgery by replacing the old, damaged lens with an artificial lens that clears up and corrects vision, often leaving patients with little to no dependence on glasses. While cataract surgery corrects cloudy lenses, it still leaves patients with astigmatism with distorted vision. Toric IOLs are specially designed to correct astigmatism along with overall vision during cataract surgery, offering complete vision correction.
Crystalens™ is a new cataract replacement lens (IOL) that works naturally with muscles in the eye to retain the eye’s ability to “accommodate” – shift focus between nearby and distant objects – after cataract surgery. With other IOLs, patients lose this ability and require corrective measures such as glasses or contact lenses. Unlike rigid lenses, the flexible silicone Crystalens features hinges that allow it to move with the eye’s muscles and accommodate seamlessly, thereby reducing or eliminating the need for vision correction. The Crystalens is implanted using the same, nearly risk-free cataract surgery techniques as with other IOLs. Most people with cataracts or who have had corneal refractive surgery and retained good eye health are acceptable candidates for Crystalens implantation, but those who have already had cataract surgery are not. People with eye health problems such as chronic infections or diabetes should check with their doctors about eligibility.
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