CONVENTIONAL HYDROGELS | 合法醫療器材資訊網

由MYoung著作·2004—Similarly,watercontentwasdeterminedwiththearboroftherefractometerateyetemperature.Thecontactlenseswereequilibratedattherespective ...

Abstract

Abstract: : Purpose: The relationship between oxygen permeability (Dk) and water content (WC%) of 34 conventional hydrogel materials was analyzed at eye temperature (35°C). The relationship was compared to that established when water content was derived at room temperature (22°C). Methods: Calibrated, corrected polarographic Dk values were previously determined at 35°C for 34 conventional hydrogel materials available as contact lenses. Refractive index was measured with an Abbe–type refractometer at room temperature and converted to water content by gravimetric adjustment of a volumetric equation derived from the Principle of Gladstone & Dale in the manner of Young MD, Benjamin WJ: Eye & Contact Lens 29(2):126–133, 2003. Similarly, water content was determined with the arbor of the refractometer at eye temperature. The contact lenses were equilibrated at the respective temperatures in U...