Microbial adherence to cosmetic contact lenses |
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| Affiliation: | 1. School of Optometry, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region;2. Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region;1. School of Optometry University of California, Berkeley, USA;2. School of Optometry and Vision Science, University of New South Wales, Australia;1. Department of Ophthalmology, Zagreb University Hospital Centre, Zagreb, Croatia;2. University of Zagreb, School of Medicine, Zagreb, Croatia;1. International Association of Contact Lens Educators, Canada;2. Optometry and Vision Science, College of Health and Life Sciences, Aston University, Birmingham, UK;3. Global R&D, Menicon Co Ltd, Nagoya, Japan;4. School of Optometry, The Hong Kong Polytechnic University, Hong Kong;5. School of Optometry and Vision Science, University of Waterloo, Canada;6. Faculty of Biomedicine and Health Sciences, Universidad Europea, Madrid, Spain;7. Bausch + Lomb, Asia Pacific;8. Tianjin Vocational Institute, School of Optometry, China;9. Helmholtz National Medical Research Center of Eye Diseases, Russia;10. CooperVision, Asia Pacific;11. Department of Materials Science & Research Centre in Optics and Optometry (COMiB), University of Milano Bicocca, Milan, Italy;12. Jordan University of Science and Technology, Faculty of Applied Medical Sciences, Jordan;13. Faculty of Optometry and Vision Sciences, SEGi University, Malaysia;14. Aster DM Healthcare, UAE;15. Optometric Research Group, Department of Optics, Optometry and Vision Sciences, University of Valencia, Spain;p. University of Alabama at Birmingham, Birmingham, AL, USA;q. Singapore Optometric Association, Singapore;r. Department of Optometry, College of Applied Medical Sciences, Qassim University, Saudi Arabia;s. Eye-Contact-Lens Research & Education Amsterdam, Netherlands;t. University of Buraimi, Oman;u. School of Optometry and Vision Science, University of New South Wales, Australia;v. Tilganga Institute of Ophthalmology, Kathmandu, Nepal;w. Jambo Eye Care, Nairobi, Kenya;x. Saks Taylor and Brauer, Brooklyn, Pretoria, South Africa |
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| Abstract: | AimTo investigate whether cosmetic contact lenses (CCL) with surface pigments affect microbial adherence.MethodFifteen brands of CCL were purchased from optical, non-optical retail outlets, and via the Internet. A standardized rub-off test was performed on each CCL (five lenses per brand) to confirm the location of the pigments. The rub-off test comprised gentle rubbing on the surfaces of each CCL with wetted cotton buds for a maximum of 20 rubs per surface. A new set of CCL (five lenses per brand) were incubated in Pseudomonas aeruginosa overnight. Viable counts of adhered bacteria were determined by the number of colony-forming units (CFU) on agar media on each lens. The adherence of P. aeruginosa as well as Staphylococcus aureus and Serratia marcescens to three brands of CCL (A–C) (five lenses per brand) were also compared to their adherences on their clear counterparts.ResultsOnly two of the 15 brands of CCL tested (brands B and C) had pigments that did not detach with the rub-off test. The remaining 13 brands of CCL all failed the rub-off test and these lenses showed higher P. aeruginosa adherence (8.7 × 105–1.9 × 106 CFU/lens). Brands B and C lenses showed at least six times less bacterial adhesion than the other 13 brands. Compared to their clear counterparts, bacterial adherence to brands B and C lenses did not differ significantly, whereas brand A lenses showed significantly higher adherence.ConclusionSurface pigments on CCL resulted in significantly higher bacterial adherence. |
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| Keywords: | Microbial adherence Bacterial adherence Decorative contact lenses Cosmetic contact lenses Coloured contact lenses |
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