Human Tear pH. Diurnal Variations

Carney, Leo G. & Hill, Richard M. (1976) Human Tear pH. Diurnal Variations. Archives of Ophthalmology, 94(5), pp. 821-824.


Using a closed chamber microelectrode system, the tear pH levels of sixteen subjects were monitored throughout the waking extent of five days. In addition to the absolute mean pH differences found among subjects, diurnal patterns of pH change could be identified for the majority. The amplitudes and periods of these cycloid patterns, however, were distinctive to each individual. Also, tear pH levels following periods of prolonged eye closure were found to be notably more acid than those associated with the waking hours.

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70 citations in Web of Science®
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ID Code: 3099
Item Type: Journal Article
Refereed: Yes
Additional Information: Self-archiving of the author-version is not yet supported by this publisher.
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Keywords: Circadian Rhythm, Hydrogen, Ion Concentration, Tears/, analysis, Adult, Female, Humans, Male, Methods, Sleep, Wakefulness
ISSN: 0003-9950
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 1976 American Medical Association
Deposited On: 19 Jan 2006 00:00
Last Modified: 15 Jan 2009 06:54

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