Multifocal intraocular lenses improve near vision without compromising distance vision. However, patients with these intraocular lenses may experience reduced contrast sensitivity and they may see haloes around lights. These are the conclusions of a study appearing in the September issue of Ophthalmology, the clinical journal of the American Academy of Ophthalmology, the Eye M.D. Association.
Monofocal lenses are the current standard of treatment, but usually require spectacles for near vision. The choice between the two types of lenses depends on patients motivation to be free of glasses and contact lenses and on their having realistic expectations about the outcomes and compromises involved.
In this systematic literature review and meta-analysis of eight randomized controlled trials, the researchers examined a number of different outcomes: distance and near visual acuity, both unaided and corrected; spectacle independence; depth of field; contrast sensitivity; glare; subjective assessment of quality of life or visual function; and surgical complications.
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