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Simple measurement of oxygen transmissibility

By Nathan Efron and Noel A. Brennan

Abstract

This paper describes a simple, in-office procedure for measuring the oxygen transmissibility (DK/L) of hydrogel contact lenses. The procedure involves measuring lens thickness with an electrical micrometer and lens water content using a hand refractometer. A graph is provided so that the lens DK/L can be derived from these two parameters. A protocol for in-office DK/L measurement is presented and the application of this procedure to patient management is discussed

Topics: 111300 OPTOMETRY AND OPHTHALMOLOGY, Hydrogel contact lens, lens thickness, average thickness, electrical micrometer, lens water content, hand refractometer, oxygen transmissibility, cornea, clinical technique
Publisher: Optometrists Association Australia
Year: 1985
OAI identifier: oai:eprints.qut.edu.au:10810
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