Multifocal intraocular lenses work to correct multiple types of vision problems and may allow a person to function without glasses after cataract surgery, according to All About Vision. AcrySof IQ ReSTOR multifocal lenses contain patented features designed to improve image quality in all lighting conditions, unlike other multifocal lenses.
During cataract surgery, the surgeon removes the damaged lens from the eye and replaces it with a synthetic lens. Traditional cataract surgery uses a monofocal lens that corrects distance vision while still requiring a person to wear glasses for reading or other close tasks, says All About Vision. A multifocal lens is able to correct distance and near vision, allowing many patients to go without glasses entirely after cataract surgery.
The most common complaint that patients have regarding multifocal lenses is the appearance of halos around lights, reports PubMed Health. Another typical complaint is decreased contrast sensitivity, or the ability to distinguish an object against a similar background. The AcrySof IQ ReSTOR lenses contain a design that prevents these issues, according to All About Vision. The ReSTOR lenses distribute light differently than other lenses, reducing glare and halos while improving overall image quality. Nonetheless, vision may not be as crisp in low light as it is in bright light, says All About Vision.