The efficacy of disinfection systems for in-office storage of hydrogel contact lenses |
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| Affiliation: | 1. Department of Biology, Terrestrial Ecology Unit, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium;2. Department of Biology & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.;3. Redpath Museum, Biology Department, McGill University, 859 Sherbrooke, Montréal, QC H3A 0C4, Canada;4. Department of Biology – Behavioural Ecology and Ecophysiology Group, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, 2610, Antwerp, Wilrijk, Belgium.;5. Research Institute for Nature and Forest (INBO), Kliniekstraat 25, 1070 Brussels, Belgium;6. Isotope Bioscience Laboratory (ISOFYS), Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium |
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| 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 (χ2 = 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. |
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