  This paper presents a first evaluation of the feasibility of Finite Element
modelling of the orbital decompression, in the context of exophthalmia. First
simulations are carried out with data extracted from a patient TDM exam.
Results seem to qualitatively validate the feasibility of the simulations, with
a Finite Element analysis that converges and provides a backward movement of
the ocular globe associated with displacements of the fat tissues through the
sinuses. This FE model can help a surgeon for the planning of the exophthalmia
reduction, and especially for the position and the size of the decompression
hole. To get an estimation of the fat tissues volume affected by the surgery,
an analytical model seems to provide quicker results for an equivalent
efficiency.
