Tear pH and the soft contact lens patient

Hill, Richard M. & Carney, Leo G. (1977) Tear pH and the soft contact lens patient. International Contact Lens Clinic, 3, pp. 71-76.


Already soft contact lenses of certain materials have reported to be dimensionally sensitive to the pH of their surroundings. For example both water content and diameter may become measurably reduced as the lens environment becomes more acidic. Such observations, of course, tend to raise certain clinical questions. What exact range of tear pH is a new soft lens likely to encounter when first dispensed, and may that range commmonly exceed the stability limits of the material, as verafied by the manafacturer? Is it possible, too, that over the longer term as the patient adapts and increase the wearing time, the lens might induce an acid shift in the tears (eg. by the lens acting as a reservoir for the acid by products of corneal metabolism)?

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ID Code: 3144
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal's website (see link) or contact the author. Author contact details: l.carney@qut.edu.au
Additional URLs:
Keywords: tear, water content, diameter, acid
ISSN: 0892-8967
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 1977 Elsevier
Deposited On: 31 Jan 2006 00:00
Last Modified: 15 Jan 2009 06:54

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