QUT ePrints

Effects on the compensatory responses to positive and negative lenses of intermittent lens wear and ciliary nerve section in chicks

Schmid, Katrina L. & Wildsoet, Christine F. (1996) Effects on the compensatory responses to positive and negative lenses of intermittent lens wear and ciliary nerve section in chicks. Vision Research, 36(7), pp. 1023-1036.

View at publisher

Abstract

TEffects on the compensatory responses to positive and negative lenses of intermittent lens wear and ciliary nerve section in chicks.his study examined the ocular compensation to lens-induced defocus in chick and the effect of interrupting lens wear on a daily basis. Eyes fitted with +10 D lenses at hatching compensated rapidly, with almost complete compensation after 4 days of lens wear; they had decreased vitreous chamber depth compared to normal eyes and were thus hyperopic when the lenses were removed. In contrast, adaptation to the -10 D lenses was much slower, was still incomplete after 9 days of lens wear, and in this case, eyes had increased vitreous chamber depth and were myopic without the lenses. Adaptation improved when lens wear was delayed until 7 days after hatching. The effect of interrupting lens wear by periods of normal vision varied with the sign of the lenses worn. Hyperopia was always seen in response to +10 D lenses, although the magnitude of the response decreased as the duration of lens wear was decreased. In contrast, even brief periods of normal vision, i.e., 3 hr, prevented the development of myopia in response to the -10 D lenses; this apparent sensitivity to normal vision is similar to that reported for form-deprivation myopia. Ciliary nerve section used here to eliminate accommodation did not alter these response patterns.

Impact and interest:

113 citations in Scopus
Search Google Scholar™
109 citations in Web of Science®

Citation countsare 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.

ID Code: 4158
Item Type: Journal Article
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: schmid.k@qut.edu.au
Keywords: Accommodation, Ocular, Contact Lenses, Chickens/, physiology, Refractive Errors/, physiopathology, Vitreous Body/, growth & development, Analysis of Variance, Animals, Ciliary Body/surgery, Comparative Study, Hyperopia/pathology, Hyperopia/physiopathology, Male, Myopia/pathology, Myopia/physiopathology, Refractive Errors/pathology, Research Support, Non, U, S, Gov't, Time Factors, Vitreous Body/pathology
DOI: 10.1016/0042-6989(95)00191-3
ISSN: 0042-6989
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 1996 Elsevier
Deposited On: 13 Jun 2006
Last Modified: 15 Jan 2009 17:03

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page