Corneal Oxygenation: Blink Frequency as a Variable in Rigid Contact Lens Wear

Fink, Barbara A., Hill, Robert M., & Carney, Leo G. (1990) Corneal Oxygenation: Blink Frequency as a Variable in Rigid Contact Lens Wear. The British Journal of Ophthalmology, 74(3), pp. 168-171.

View at publisher


Using a micropolarographic system, we measured the responses of six human corneas to nine oxygen exposure conditions: to air (continuous open-eye) with no contact lens in place, and to eight interblink intervals (1, 2, 3, 4, 5, 6, 7, and 300 s durations) with an oxygen impermeable lens in place. The corneal oxygen uptake rates immediately following each of those conditions were direct indices of tear bulk-flow exchange under a rigid contact lens as an oxygen route. Greatest efficiencies in reducing corneal oxygen demand were associated with the two highest blink frequencies examined (namely, for interblink intervals of 2 s or less). Even at those frequencies oxygen demands ranging from 4 to 6 times the open-eye, non-wearing, baseline rate for each eye typically occurred, clearly justifying the need for a supplementary oxygenation route, for example, directly through rigid contact lens materials having inherently high oxygen permeabilities.

Impact and interest:

9 citations in Scopus
Search Google Scholar™
3 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

247 since deposited on 15 Sep 2006
19 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 3105
Item Type: Journal Article
Refereed: Yes
Keywords: Blinking, Contact Lenses, Cornea/, metabolism, Oxygen/, metabolism, Adult, Female, Humans, Male, Research Support, U, S, Gov't, P, H, S, Time Factors
DOI: 10.1136/bjo.74.3.168
ISSN: 0007-1161
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 1990 BMJ Publishing Group
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 15 Sep 2006 00:00
Last Modified: 09 Jun 2010 12:29

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page