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Tecnis Multifocal and ReSTOR
The Tecnis Multifocal and Restore cataract lens implants are after-cataract implants whose aim is to achieve clear distance as well as near vision without glasses. They are examples of multifocal presbyopic implants. Most patients who have cataract surgery with a multifocal implant enjoy spectacle free vision after surgery. By comparision, with a standard monofocal implant, a patient who has clear distance vision will need glasses for near work.
Multifocal implants use the brain’s natural ability to focus on one image while suppressing another to achieve clear vision at all distances. The brain can attend to one image (a cinema screen, for example), while ignoring another image (the back of fellow cinema goers’ heads). A multifocal implant utilizes this ability by providing multiple images and allowing the brain to attend to one and suppress the others.
Concentric rings of various focusing power on the Tecnis Multifocal and Restore implants focus light onto the retina from different distances. Stronger power rings on the implant with focus near images clearly onto the retina, such as for reading or sewing. Weaker power rings on the implant focus far images clearly onto the retina, such as for driving or watching television. The brain then attends to the image of interest while suppressing the rest.
Your Nashua Eye cataract surgeon can help decide if a multifocal lens is right for you. Patients who are the best candidates for multifocal implants have cataracts with otherwise healthy eyes and a lifestyle that majorly includes near vision tasks such as reading or computer.