Oxygen permeability of hard gas permeable contact lens materials
نویسندگان
چکیده
منابع مشابه
Consensus on recording of gas permeable contact lens fit.
PURPOSE To develop a new schematic scheme for efficiently recording the key parameters of gas permeable contact lens (GP) fits based on current consensus. METHODS Over 100 established GP fitters and educators met to discuss the parameters proposed in educational material for evaluating GP fit and concluded on the key parameters that should be recorded. The accuracy and variability of evaluati...
متن کاملComparative study of antibacterial and antifungal effects of rigid gas permeable contact lens disinfecting solutions.
The aim of this study was to compare antimicrobial efficacy of rigid contact lens disinfecting solutions. We tested five commercially available solutions: Unique pH (Alcon Laboratories), Boston Advance (Polymer Technology Corp.), Nitilens Conditioner GP (Avizor), Total Care (AMO), Boston Simplus (Bausch&Lomb). Their efficacy to disinfect saline solution experimentally contaminated with American...
متن کاملImpact of rigid gas-permeable contact lens extended wear on corneal epithelial barrier function.
PURPOSE To measure the effect of hypoxia and eye closure on epithelial permeability to fluorescein (P(dc)) during rigid lens extended wear (EW). METHODS Central corneal thickness (CT) and P(dc) were measured in 42 subjects with an optical pachometer and automated scanning fluorophotometer, respectively. All subjects had been successfully wearing rigid gas-permeable (RGP) lenses on a 6-night E...
متن کاملBiocompatibility and cytotoxicity study of nanophotonic rigid gas permeable contact lens material
Since materials on nanoscale have different characteristics from materials on macro scale their biocompatibility should be precisely and specifically investigated. Fullerenes, the third carbon allotrope, are one of the most used nanomaterials. The least stable and the most common is fullerene C60. One of the main disadvantages of fullerene is its low solubility in water. In order to make it sol...
متن کاملMigration of rigid gas permeable contact lens into the upper eyelid after trauma: a case report
BACKGROUND Migration of a rigid gas permeable (RGP) contact lens after trauma is rare, and its clinical characteristics have not been fully discussed. CASE PRESENTATION A 36-year-old female showed mild swelling in the right upper eyelid. She lost her RGP contact lens seven months prior to her first visit, from trauma by her child's kick to the right eye. At the first examination, we felt a fi...
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ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 1986
ISSN: 0816-4622,1444-0938
DOI: 10.1111/j.1444-0938.1986.tb06794.x