Analysis of the effects of finite element type within a 3D biomechanical model of a human optic nerve head and posterior pole.

ABSTRACT:

Background and objective

Biomechanical stresses and strains can be simulated in the optic nerve head (ONH) using the finite element (FE) method, and various element types have been used. This study aims to investigate the effects of element type on the resulting ONH stresses and strains.

Methods

A single eye-specific model was constructed using 3D delineations of anatomic surfaces in a high-resolution, fluorescent, 3D reconstruction of a human posterior eye, then meshed using our simple meshing algorithm at various densities using 4- and 10-noded tetrahedral elements, as well as 8- and 20-noded hexahedral elements. A mesh-free approach was used to assign heterogeneous, anisotropic, hyperelastic material properties to the lamina cribrosa, sclera and pia. The models were subje

SUBMITTER: Karimi A 

PROVIDER: S-EPMC7722137 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature