First and third generation silicone hydrogel contact lens physical properties impact on patient preferences

Abstract

Purpose: Since the launch of silicone hydrogel lenses in 1999, there has been a trend toward naturally wettable, lower modulus, and higher water content materials in the marketplace. Studies to date have not seen a direct correlation between lens modulus and comfort. This study aimed to understand if there are comfort-related patient preference differences that correspond with lenses of different moduli and water contents after 4 weeks of daily wear.