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    Extended-depth-of-focus IOLs expand surgical options

    Point/counterpoint among surgeons examines IOL benefits, compares with existing lenses


    Although patients may tolerate continued use of glasses, bifocal glasses have certain side effects, such as a greater risk of falls. Many patients may say they are comfortable using glasses without realizing they have a choice—such as extended-depth-of-focus lenses, he added.

    This type of lens may cause a bit of starburst, but it does not have the problem with halos associated with some other IOLs, Dr. Chang explained.

    Before extended-depth-of-focus IOLs even became available in the United States, the Tecnis Symfony IOL (Abbott Medical Optics)—approved in July 2016 by the FDA for use in United States, and previously approved in more than 50 countries around the world—was already challenging the definition of the category, Dr. Chang said.

    “Extended-depth-of-focus lenses improve depth of field, have minimally decreased visual quality, and have reduced night vision symptoms compared with multifocal IOLs,” he said. “If an IOL can provide 1.0 D or more improvement in depth of focus and still maintain fewer side effects, it would approach the definition of a presbyopia-correcting IOL but have better acceptance than current-generation IOLs.”

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