the study of lysozyme adsorption onto 2-hydroxyethylmethacrylates and silicon hydrogel contact lenses
Authors
abstract
in order to increase the water content and the oxygen permeability of hydrogels used in themanufacture of contact lenses, the polar monomer silicon hydrogel contact lenses (shcl), and 2-hydroxyethyl methacrylate (hema) were copolymerized with the hydrogels. due to the presence ofpolar monomers in the conventional contact lenses, the major component of the human tear,lysozyme is extensively adsorbed onto their surfaces. the adsorption of lysozyme onto the contactlens’ surface leads to limitations in its application. the present study concentration of lysozyme,adsorbed onto the surface of hema and shcl hydrogels were measured by uv-vis spectroscopy.the lysozyme employed was obtained from solutions with similar to concentration of artificial tear.the adsorption results were examined by the langmuir adsorption isotherm and the constants of thisisotherm were also evaluated.
similar resources
The study of Lysozyme adsorption onto 2-hydroxyethylmethacrylates and Silicon Hydrogel Contact Lenses
In order to increase the water content and the oxygen permeability of hydrogels used in themanufacture of contact lenses, the polar monomer Silicon Hydrogel Contact Lenses (SHCL), and 2-hydroxyethyl methacrylate (HEMA) were copolymerized with the hydrogels. Due to the presence ofpolar monomers in the conventional contact lenses, the major component of the human tear,lysozyme is extensively adso...
full textLysozyme 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...
full textAdsorption Study of the Lysozyme from aqueous solution onto Hydroxyapatite Nanopowders
In this study, a series of laboratory tests were conducted to investigate the efficiency of hydroxyapatite (1-iAP)nanopowders towards adsorption of lysozyme from aqueous solution. In the present research. I RP nanopowderssynthesized from egg-shell characterized using SEM and FT-Ht. The adsorption of lysozyme was I mg/mL using0.1 g adsorbent in 100 mL of lysozyme solution. Adsorption data were f...
full textcomparative 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 ...
full textComparative 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 d...
full textMicrobial 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...
full textMy Resources
Save resource for easier access later
Journal title:
journal of physical & theoretical chemistryISSN
volume 9
issue 3 2012
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023