Accession Number : AD0651107

Title :   A THEORETICAL MODEL OF THE CORNEA FOR USE IN STUDIES OF TONOMETRY,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Mow,C. C.

Report Date : APR 1967

Pagination or Media Count : 26

Abstract : A theoretical model of the cornea, based on corneal dimensions and observed properties, is presented. It is shown that because of large differences in the thicknesses of the Bowman's and Descemet's membranes and the stroma; and because of the reported large differences in the elastic properties of the layers, a sandwich-shell model is a good approximation for the study of corneal deformation. The theory is applicable for applanation tonometry. A set of equilibrium equations based on Reissner's theory is given. Shell parameters which determine the behavior of shells are expressed in terms of the corneal properties and dimensions. Numerical examples which show the effects of corneal parameters on the stress resultants due to intraocular pressure are also given. (Author)

Descriptors :   (*CORNEA, DEFORMATION), BIOPHYSICS, STRESSES, ELASTIC PROPERTIES, MATHEMATICAL MODELS, OPHTHALMOLOGY

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE