Customized Finite Element Modelling of the Human Cornea.

ABSTRACT:

Aim

To construct patient-specific solid models of human cornea from ocular topographer data, to increase the accuracy of the biomechanical and optical estimate of the changes in refractive power and stress caused by photorefractive keratectomy (PRK).

Method

Corneal elevation maps of five human eyes were taken with a rotating Scheimpflug camera combined with a Placido disk before and after refractive surgery. Patient-specific solid models were created and discretized in finite elements to estimate the corneal strain and stress fields in preoperative and postoperative configurations and derive the refractive parameters of the cornea.

Results

Patient-specific geometrical models of the cornea allow for the creation of personalized refractive maps at different levels of IO

SUBMITTER: Simonini I 

PROVIDER: S-EPMC4476710 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature