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Contact Lens Materials: Their Properties and Chemistries

  • Thomas B. HarveyIII
  • William B. Meyers
  • Lyle M. Bowman

Abstract

The use of poly(methyl methacrylate) (PMMA) in corneal contact lenses led to the popularization of the contact lens in the early 1950s. PMMA is lighter than glass, clear, rigid, and relatively inert biologically. Its largest failing as a contact lens material is its lack of oxygen permeability, and a variety of materials have since been developed to overcome the oxygen deprivation problem that arises with PMMA lenses. More modern contact lens materials have much higher oxygen permeability than PMMA, and most of these materials fall into one of two categories: (1) soft hydrogels, or (2) rigid gas permeable. The chemical compositions and physical properties of both types of materials will be discussed.

Keywords

Contact Lens Oxygen Permeability Contact Lens Material Cellulose Acetate Butyrate Acetate Butyrate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    C. O. Ng, & B. J. Tighe, Brit. Polym. J., 8, 118–123 (1976). “Polymers in Contact Lens Applications VI. The Dissolved Oxygen Permeability of Hydrogels and the Design of Materials for Use in Continuous-Wear Lenses.”.CrossRefGoogle Scholar
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    B. J. Tighe, Brit. Polym. J., 8, 71–77 (1976). “The Design of Polymers for Contact Lens Applications.”.CrossRefGoogle Scholar
  3. 3.
    M. D. Sarver, D. A. Baggett, M. G. Harris & K. Louie, Am. J. Optometry and Physiological Optics, 58 (5), 386–392 (1981). “Corneal Edema with Hydrogel Lenses and Eye Closure: Effect of Oxygen Transmissibility.”.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Thomas B. HarveyIII
    • 1
  • William B. Meyers
    • 1
  • Lyle M. Bowman
    • 1
  1. 1.Sola/Barnes-HindSunnyvaleUSA

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