Surface hydration of hydrogel contact lenses
نویسندگان
چکیده
منابع مشابه
Microbial contamination of hydrogel contact lenses.
Bacterial contamination of contact lenses (CLs) may contribute to CL-related corneal infection and inflammation. This study reports CL biota over time during daily and extended wear. Microbial contamination of a 58% water, ionic hydrogel CL and a 38% water, non-ionic hydrogel CL was evaluated in an Australian and an Indian population. Fifty wearers were repeatedly sampled over 18 months. Overni...
متن کاملLysozyme sorption in hydrogel contact lenses.
PURPOSE To examine the processes involved in formation of protein deposits on hydrogel contact lenses. METHODS The adsorption and/or penetration of lysozyme on or into three types of contact lenses, etafilcon A, vifilcon A, and tefilcon, were investigated in vitro using a radiolabel-tracer technique, x-ray photoelectron spectroscopy, and laser scanning confocal microscopy. RESULTS Binding o...
متن کاملTear flow under hydrogel contact lenses.
The tear replenishment rate under three different hydrogel lenses was determined with a slit lamp modified to serve as a fluorophotometer. Fractional tear volume replenishment rates under these lenses averaged 0.011 per blink, which is significantly lower than the 0.10 to 0.20 per blink reported for rigid lenses. These data suggest that the amount of oxygen delivered to the cornea by tear pumpi...
متن کاملcomparative study of two silicone hydrogel contact lenses used as bandage contact lenses after photorefractive keratectomy
background: silicon hydrogel bandage contact lenses are used to enhance epithelial healing, control surface-generated pain, and prevent epithelial erosions after refractive surgery. considering the importance of faster reepithelialization in preventing complications of photorefractive keratectomy (prk) and the fact that the features and specifications of these commercially-available lenses are ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 1986
ISSN: 0816-4622,1444-0938
DOI: 10.1111/j.1444-0938.1986.tb04595.x