Abstract
To evaluate several methods of in-office storage of diagnostic hydrogel lenses, bacterial contamination rates of stored lenses were studied. Worn diagnostic lenses were treated with either AO Sept (CIBA Vision Corp.) or ReNu (Bausch & Lomb) disinfection systems and compared with lenses treated with heat or stored in unpreserved saline. At 1 week and at 1, 2, and 3 months, stored lenses were cultured for microbial contamination. Lenses stored in AO Sept or ReNu had 5.5 and 7.0% overall contamination rates, respectively, which were greater than the rate for heat-treated lenses (χ 2 = 44.43, p < 0.00005) at all time intervals. The contamination rate increased between the 1- and 2-month storage intervals, and it is recommended that practitioners using AO Sept or ReNu redisinfect trial hydrogel contact lenses at least once a month.
Published Version
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