Steady-state diffusion of water through soft-contact-lens materials
نویسندگان
چکیده
منابع مشابه
Steady-state diffusion of water through soft-contact-lens materials.
Water transport through soft contact lenses (SCL) is important for acceptable performance on the human eye. Chemical-potential gradient-driven diffusion rates of water through SCL materials are measured with an evaporation-cell technique. Water is evaporated from the bottom surface of a lens membrane by impinging air at controlled flow rate and humidity. The resulting weight loss of a water res...
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The purpose of this study was to examine the in vitro dehydration characteristics of new and worn conventional and silicone-hydrogel contact lenses. Four contact lens materials were investigated: three conventional hydrogels (etafilcon, nelfilcon, omafilcon) and one silicone-hydrogel (narafilcon). Gravimetric data were obtained with analytical balance with 1 min intervals. Quantitative paramete...
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ژورنال
عنوان ژورنال: Biomaterials
سال: 2005
ISSN: 0142-9612
DOI: 10.1016/j.biomaterials.2005.02.028