Optimising the thickness-water content relationship for hydrogel lenses

Brennan, Noel A. & Carney, Leo G. (1987) Optimising the thickness-water content relationship for hydrogel lenses. The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, 13(5), pp. 264-267.



A model that can be used to estimate the optimum water content thickness relationship for a hydrogel contact lens of a given power is presented. The model Is based on estimates of the minimum practical center thickness to which hydrogel lenses may currently bemanufactured and average thickness calculations. Minimum thickness lenses of water contents in the range of 65-70% are calculated to provide optimal oxygen transmissibility to the central corneal areafor a wide range of powers. Although a lack of understanding of the oxygen delivery characteristics of hydrogel lenses places limitations on the accuracy of this model, it represents a significant advance over earlier proposals.

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ID Code: 3134
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: oxygen, transmissibility, thickness
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1987 Contact Lens Association of Ophthalmologists
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 31 Jan 2006 00:00
Last Modified: 10 Aug 2011 13:21

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