A comparison of the efficacy of four units for the physical disinfection of contact lenses

Coulson, John, Shuley, Vicki L., & Collins, Michael J. (1994) A comparison of the efficacy of four units for the physical disinfection of contact lenses. Clinical and Experimental Optometry, 77, pp. 105-109.


Four contact lens disinfection units were challenged with saline suspensions of Pseudomonas aeruginosa, Staphylococcus aureus, Serratia marcescens, Escherichia coli and a clinical isolate of Candida albicans. The disinfection units all relied on physical disinfection methods and included the Sonasept unit which uses ultrasound and heat, the Aquasteril unit which uses ultraviolet radiation, the Bausch and Lomb Heat unit and the OPSM Thermos flask, both of which act through moist heat. Both the Sonasept and Aquasteril units performed poorly under most circumstances, causing little reduction in the number of viable organisms and in some cases there was an increase in the number of viable organisms following a disinfection cycle. The Bausch and Lomb Heat unit and the OPSM Thermos flask killed the challenge organisms under all test conditions.

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ID Code: 862
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal’s website (see hypertext link) or contact the author. Michael J. Collins (email):m.collins@qut.edu.au The contents of this journal from 1998 to 2005 can be freely accessed online via the journal’s web page (see hypertext link).
Additional URLs:
ISSN: 0816-4622
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1994 Optometrists Association Australia
Deposited On: 13 Oct 2005 00:00
Last Modified: 15 Jan 2009 06:34

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