Diurnal variations of corneal topography and thickness

Kiely, Patricia M., Carney, Leo G., & Smith, George (1982) Diurnal variations of corneal topography and thickness. American Journal of Optometry and Physiological Optics, 59(12), pp. 976-982.



Measurements of central and peripheral corneal thickness, corneal topography, and central corneal curvature were made for 21 subjects at hourly intervals for 12 hr of 1 day for each subject. Values for corneal radius and asphericity were obtained from keratometry and photokeratoscopy, and their stability throughout the day was evaluated. Corneal radius was observed to steepen during the day, whereas asphericity remained constant. Corneal thickness was measured by pachometry and was found to be at its thickest on first awakening. Corneal curvature and central corneal thickness were highly correlated; low correlation was found between corneal asphericity and central corneal thickness. Some subjects exhibited large fluctuations in one or all of the parameters considered.

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95 citations in Web of Science®
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ID Code: 3187
Item Type: Journal Article
Refereed: Yes
Additional Information: l.carney@qut.edu.au
Additional URLs:
Keywords: Cornea/, anatomy & histology, Adolescent, Adult, Biometry/instrumentation, Biometry/methods, Circadian Rhythm, Cornea/physiology, Female, Humans, Male, Tears/physiology
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 1982 American Academy of Optometry
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 02 Jan 2007 00:00
Last Modified: 09 Jun 2010 12:29

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