Application of the modified finite particle method to the simulation of the corneal air puff test

Abstract

We present a numerical procedure for the simulation of the air puff test, a medical procedure used by ophtalmologists for the identification of the Intra Ocular Pressure, and potentially useful for the identification of material properties of the human cornea. The problem involves the modeling of the cornea, that is a biological tissue, modelled as an hyperelastic material, and the aqueous humor, that is, the fluid filling the anterior chamber of the eye, that is treated as a Newtonian fluid, and modelled using a meshfree formulation, useful for the solution of a Fluid-Structure Interaction problem. Fluid and Structure are coupled using a Dirichlet-Neumann iterative approach, which permits the adoption of a partitioned coupling approach and explicit, fast solvers for the different subproblems.