We thank Drs Schachar and Abolmaali for their insightful comments. We are in agreement that the finite element method is an excellent way to analyze the effects of blunt trauma to the eye.
The elastic modulus of the lens was obtained from the results by Fisher.1,2 A simplification of that data using graphical force displacement with an assumption of the average cross-sectional area for an oblong sphere (lens shape) and standard force displacement measurements for an oblong sphere assuming linear elastic behavior was used to determine the elastic modulus through inverse dynamics.
Stitzel J, Duma S. Proper Material Properties Are Required for the Finite Element Method—Reply. Arch Ophthalmol. 2006;124(7):1065-1066. doi:10.1001/archopht.124.7.1065