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Accelerated study on lysozyme deposition on poly(HEMA) contact lenses

Paper ID Volume ID Publish Year Pages File Format Full-Text
13730 895 1998 5 PDF Available
Title
Accelerated study on lysozyme deposition on poly(HEMA) contact lenses
Abstract

A technique was developed to accelerate lysozyme deposition on poly(HEMA) contact lenses and measure the amounts of the deposited lysozyme. This technique was for evaluation of bendazac lysine solution, a contact lens cleaning and wetting solution. Effect of temperature on lysozyme deposition on poly(HEMA) contact lenses was examined. Five temperatures ranging from 25°C to 90°C were chosen to examine the temperature effect. The amounts of lysozyme deposited on poly(HEMA) contact lenses at 25°C and 60°C were 0.27 μg/lens and 0.61 μg/lens, respectively. The amount increased sharply to 23 μg/lens at 70°C with the maximum of 31 μg/lens at 90°C. Kinetics of lysozyme deposition on poly(HEMA) contact lenses was examined at 80°C. Lysozyme deposition increased sharply during the first 2 h and reached a plateau after 2 h. Effectiveness of various cleaning procedures was examined using bendazac lysine solution. When the contact lenses were washed without rubbing with fingers, the bendazac lysine reduced the amount of deposited lysozyme by more than 40% from 18.3 μg/lens to 10.6 μg/lens. The effect of bendazac lysine was most prominent when the contact lenses were shaken during storage in the presence of lysozyme in solution. If the contact lenses were cleaned by rubbing with fingers, the effect of bendazac lysine solution on the prevention of lysozyme deposition was negligible.

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Accelerated study on lysozyme deposition on poly(HEMA) contact lenses
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 19, Issue 22, November 1998, Pages 2051-2055
Authors
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering