Microbial keratitis has been shown to be significantly associated with contact lens wear. The efficacy of a commercial 253.7nm ultraviolet (UT7) light/ultrasonic contact lens disinfection unit against Staphylococcus aureus, Pseudomonas aeruginosa, Serratia marcescens, Mieroeoccus luteus and Candida albicans was measured. The machine was found to reduce organism numbers, but the survivors were present at unacceptably high levels to give confidence in efficient disinfection.
- Contact lenses
- UV light