State-of-the-art multifocal intraocular lenses reduce the need for reading glasses after cataract or lens replacement surgery. These lenses are designed to address the problem of presbyopia, in which people over the age of 40 begin to lose their ability to read or see up close. In the past, when an artificial lens, called an intraocular lens implant or “IOL,” was placed inside the eye during cataract or lens replacement surgery, it could only focus at a single distance. These IOLs are called single-focus IOLs and allow an eye to see either far away or close-up but not both. Advanced intraocular lenses, called “multifocal IOLs,” provide correction for both near and distance vision. And both near and far objects can be in focus at the same time. Many people get used to multifocal IOLs right away. Others feel a little imbalanced at first but get used to it within a matter of days or weeks.
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