Efficacy of Contact Lens Solutions Against Bacteria Isolated from Clinical Specimens

In this study, the efficacy of two recently marketed multipurpose contact lens disinfecting solutions against Staphylococcus aureus Rosenbach and Pseudomonas aeruginosa Gessard bacteria isolated from clinical specimens were investigated. The antibacterial activities of multipurpose contact lens disinfecting solutions were determined by microbiological culture method described in ISO 14729 guidelines. Bacterial counts were obtained for sampling intervals determined in addition to the manufacturer’s minimum recommended disinfection time and mean log reductions were calculated for each interval. Three different lots of each contact lens disinfecting solutions were used. The results showed that both contact lens disinfecting solutions provided at least 3 log reductions for all bacteria tested at the end of the manufacturer’s minimum recommended disinfection time. New formulations are being developed in contact lens disinfecting solution industry by new technologies and scientific researches. Further studies on strains isolated from different sources are needed in order to a complete understanding of these newly marketed contact lens solutions.