Modelado geométrico de la estructura corneal en condiciones iniciales no patológicas. Un estudio comparativo

Abstract

advance in clinical practice for the prediction of the structural

behaviour of soft tissues in certain healthy or pathological

scenarios. One of the main features of these simulations is

that they can define the geometric parameters of the structure

in its initial boundary conditions. In the case of the cornea,

there are discrepancies with respect to the initial conditions

that depend on whether if it is considered its physiological

geometry measured in vivo, or otherwise its geometry in its

stress-free state. The choice of one or the other could lead

to errors in the simulation model due to the non-linearity of

these tissues. In this study, two methodologies were evaluated,

the displacement method and the prestress method, to obtain

the geometry of non-pathological cornea in its free-of-stress

state. Both methodologies allow obtaining the physiological

geometry measured in-vivo of the healthy cornea, however, the

method of displacements presents a computational architecture

that makes it more efficient in numerical simulation, when

compared to the pre-stress method