Predicting rupture of the human cornea based on the tensile strength of corneal lamellae

Michael R. Bryant, Peter J. McDonnell

Research output: Contribution to conferencePaperpeer-review

Abstract

In this study, corneal rupture is assumed to occur when the stress along the fiber direction of a corneal lamella reaches a critical value. By modeling a strip of corneal tissue as a laminate composite, the stress measured from a simple tensile test is related to the stress in the fiber direction within a lamella. This provides an estimate of the tensile strength of a corneal lamella based on the results of tensile tests of strips of human cornea. A laminate composite finite element model of the human cornea is then constructed, and it is shown that the pressure at which the maximum lamella stress reaches the lamella rupture stress agrees with experimental measurements of the rupture pressure of intact human corneas.

Original languageEnglish (US)
Pages77-78
Number of pages2
StatePublished - Dec 1 1994
Externally publishedYes
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: Nov 6 1994Nov 11 1994

Other

OtherProceedings of the 1994 International Mechanical Engineering Congress and Exposition
CityChicago, IL, USA
Period11/6/9411/11/94

ASJC Scopus subject areas

  • Engineering(all)

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