Material Properties from Air Puff Corneal Deformation by Numerical Simulations on Model Corneas.

ABSTRACT:

Objective

To validate a new method for reconstructing corneal biomechanical properties from air puff corneal deformation images using hydrogel polymer model corneas and porcine corneas.

Methods

Air puff deformation imaging was performed on model eyes with artificial corneas made out of three different hydrogel materials with three different thicknesses and on porcine eyes, at constant intraocular pressure of 15 mmHg. The cornea air puff deformation was modeled using finite elements, and hyperelastic material parameters were determined through inverse modeling, minimizing the difference between the simulated and the measured central deformation amplitude and central-peripheral deformation ratio parameters. Uniaxial tensile tests were performed on the model cornea materials as

SUBMITTER: Bekesi N 

PROVIDER: S-EPMC5085055 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature