Clinical performance of different care systems with silicone hydrogel contact lenses

Purpose: To assess the clinical and subjective performance of a one-step hydrogen peroxide (H(2)O(2)) lens care system compared to a multi-purpose disinfecting system (MPDS) when used with silicone hydrogel (SiH) lenses. Methods: This was an eight-week, contralateral (lens type) clinical trial with a randomized, cross-over (care system) design. The H(2)O(2) system was Clear Care ((AO Sept Plus) CIBA VISION) and the MPDS was OPTI-FREE RepleniSH (Alcon) and the SiH materials were lotrafilcon B (Air Optix; CIBA VISION) and senofilcon A (Acuvue OASYS, Johnson & Johnson Vision Care). Investigators and subjects were masked to lens care and lens type, respectively. Clinical variables and ocular health assessments were conducted at a baseline, two-week and four-week visit for each cross-over phase. Comfort, dryness and vision were rated on 0-100 scales. Wearing times and comfortable wearing times were also recorded. Results: Twenty-six subjects were enrolled: nine male, 17 female, mean age (+/- standard deviation) 31 +/- 12 years (range 17-59 years) and 24 subjects completed the study. Clinical variables showed no difference between solutions (all p > 0.05), however one subject exhibited solution-induced corneal staining with both lens materials and the MPDS. There was no difference between solutions in subjective overall ratings of comfort, dryness or vision (p > 0.05). The H(2)O(2) resulted in longer reported comfortable wearing times than the MPDS (10.93 +/- 1.71 vs 9.84 +/- 1.47 h; repeated measures ANOVA, p < 0.01). Conclusions: While both lens care systems performed well with the SiH lenses used, the H(2)O(2) resulted in a longer reported comfortable wearing time then the MPDS. (C) 2010 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.