Disinfection efficacy in an integrated ultraviolet light contact lens care system.
We evaluated a new integrated contact lens care system that combines fluid turbulence for lens cleaning with ultraviolet (UV) light for solution sterilization. The ultraviolet light system was used to clean and disinfect 42 soft contact lenses (water contents: 38.6%, 43%, 55%, and 70%) and two rigid gas permeable lenses. Test lenses were contaminated with 10(6) cells/mL of Bacillus pumilus, Aspergillus niger, Pseudomonas aeruginosa, and Acanthamoeba castellanii and subjected to a 15-minute cleaning-disinfection cycle. Bathing solutions and contact lenses were cultured at various time intervals and at the end of the cycle. All bathing solutions and all lenses but one were found to be sterile after one cycle. All units effectively disinfected solutions and contact lenses. This device may be an effective alternative to existing contact lens care systems.
Admoni
M M
MM
Department of Ophthalmology, Mount Sinai Medical Center, New York, NY 10029.
Bartolomei
A
A
Qureshi
M N
MN
Bottone
E J
EJ
Asbell
P A
PA
D000048:Acanthamoeba / Q000254:growth & development / Q000528:radiation effects; D000818:Animals; D001234:Aspergillus niger / Q000254:growth & development / Q000528:radiation effects; D001419:Bacteria / Q000254:growth & development / Q000528:radiation effects; D018639:Contact Lens Solutions; D003261:Contact Lenses; D003263:Contact Lenses, Hydrophilic; D004203:Disinfection / Q000379:methods*; D014466:Ultraviolet Rays
D018639:Contact Lens Solutions