Efficacy of a contact lens cleaning device and its enhancement of the performance of contact lens care products

Abstract

Background - Corneal infections due to contact lens contamination are risks associated with contact lens wear. Care systems which reduce these risks are desirable. Methods - This study evaluated a contact lens cleaning device using normal saline initially and then four contact lens solutions. Results - Using saline, six out of 10 tests resulted in complete removal of challenge organisms or showed reductions to 10 cfu/ml or < 10 cfu/ml. Tests upon organism using multipurpose solutions showed > 6 log reductions in 2-3 minutes. With laboratory made biofilms, similar results were obtained. Conclusions - This device improves lens cleaning and enhances lens care solutions. When used correctly it should lead to significant reductions in microbial keratitis associated with inadequate contact lens hygiene.