Refractive index and reflectance of the anterior surface of the cornea

Clarke, B.A.J. & Carney, Leo G. (1971) Refractive index and reflectance of the anterior surface of the cornea. American Journal of Optometry and Archives of American Academy of Optometry, 48(4), pp. 333-343.



A new type of probe devised for the Goldmann applanation tonometer depends for its operation on the difference in critical angles for glass-tear fluid and glass-cornea interfaces. The probe failed to work correctly, and subsequent investigations to determine why were directed at the physical structure of the pre-corneal tear film. Photometry indicated that the anterior surface of the cornea in vivo reflected up to 8% of the incident light, more then seems generally supposed. Calculations of the anterior corneal surface reflectance indicate that two or three layer models of the pre-corneal tear film fit the observations. Slit lamp observations indicated that the reflectance of the corneal epithelium is much lower than that of the endothelium.

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ID Code: 3175
Item Type: Journal Article
Refereed: Yes
Additional Information:
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Keywords: Optics, Refraction, Ocular, Cornea/, physiology, Humans, Photometry, Tonometry, Ocular
ISSN: 0002-9408
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 1971 American Academy of Optometry
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 27 Jan 2006 00:00
Last Modified: 10 Aug 2011 13:38

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