Global and local contributions to corneal surface curvature: a simple model

African Vision and Eye Health


 
 
Field Value
 
Title Global and local contributions to corneal surface curvature: a simple model
 
Creator Harris, W. F.
 
Subject — corneal curvature; local; global; dioptric power matrix; variation
Description Variations in corneal surface powers reflect variations in the geometry of the cornea.  In particular one can regard corneal surface curvature as a combination of local and global effects.  A simple mathematical model of the cornea is presented which makes use of measurements of the curvature of the anterior and posterior surfaces to decompose the curvature into global and local contributions.  The model gives insight into the source of variations in keratometric measurements, lids and eye turn, perhaps, for global effects and the tear film, perhaps, for local effects.  The model also takes account of the thickness of the cornea.  A numerical example is presented.
 
Publisher AOSIS
 
Contributor
Date 2008-12-17
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format application/pdf
Identifier 10.4102/aveh.v67i1.178
 
Source African Vision and Eye Health; South African Optometrist: Vol 67, No 1 (2008); 11-16 2410-1516 2413-3183
 
Language eng
 
Relation https://avehjournal.org/index.php/aveh/article/view/178/147
 
Coverage — — —
Rights Copyright (c) 2008 W. F. Harris https://creativecommons.org/licenses/by/4.0