Many U.S. contact lens wearers fail to replace their contact lenses according to the manufacturer-recommended replacement frequency (MRRF), according to a new study released by CIBA Vision.
The study evaluated the wearing habits of 1,654 contact lens wearers. Among those who wore silicone hydrogel lenses designed for two-week replacement, 59 percent wore their lenses longer than the MRRF. As a group, people who wore daily disposable contact lenses were more compliant with the manufacturer’s recommended replacement schedule. Only 15 percent of those wearing daily disposable contacts reported wearing them more than one day.
When contact lens wearers were asked why they were wearing their lenses longer than recommended, the two most frequent reasons were “forgetting which day to replace lenses” (51 percent) and “to save money” (26 percent).
The study was conducted by the Center for Contact Lens Research at the University of Waterloo School of Optometry (Ontario, Canada), in collaboration with David B. Sarwer, PhD, at the University of Pennsylvania School of Medicine.
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