Comparative study on the clinical performance of acuvue and focus contact lenses

We compared the visual performance of Acuvue and Focus contact lenses with spectacle correction; 17 Hong Kong-Chinese were recruited, and contrast thresholds (at spatial frequencies of 1.0, 4.0, and 16.0 c/deg) were measured for each type of correction. Our results showed that the level of myopia did not affect the contrast thresholds measured for each type of correction at all levels of spatial frequencies tested. There was also no significant difference in the contrast thresholds between types of correction used. The subjective performances of the two brands of lens used were also assessed by asking each subject to answer a questionnaire at the end of the study. The scorings in the questionnaire for Focus were consistently more favorable than those for Acuvue for all symptom variables. This suggested that subjects preferred Focus to Acuvue, although the differences did not reach statistical significance. Our results also showed that "lens discomfort" was the most powerful symptom variable that determined a subject's overall lens preference. 1997.