Ulster University Logo

Ulster Institutional Repository

Corneal shape change during accommodation

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Pierscionek, BK, Popiolek-Masajada, A and Kasprzak, H (2001) Corneal shape change during accommodation. EYE, 15 (Part 6). pp. 766-769. [Journal article]

Full text not available from this repository.

Abstract

Purpose To investigate whether accommodation induces any changes in central corneal curvature. Methods Shape changes were measured on 14 subjects using a keratometer modified to enable a change in focus to occur without a change in vergence. All subjects were emmetropic and their ages ranged from approximately 20 to 28 years. Results In 11 of the 14 subjects a difference in central corneal curvature, of around 0.4 D in at least one principal meridian, was found when focus was changed between distant and near targets. In 9 subjects the curvature was greater for near focus in at least one meridian. In 5 subjects the change in one meridian was opposite in effect to what would be expected, i.e. the curvature was greater at distance than at near. Conclusion The study suggests that accommodation may have some effect on corneal shape.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Vision
ID Code:7637
Deposited By:Professor Barbara Pierscionek
Deposited On:18 Jan 2010 09:59
Last Modified:18 Jan 2010 09:59

Repository Staff Only: item control page