Temperature increase in the extracted and compound eye models

Abstract

The paper deals with the comparison of the temperature increase due to a high frequency exposure in two realistic human eye models. The first model of the human eye, named extracted eye model is placed in the free space, while the second model of the eye, named compound eye model is included in the detailed human head model obtained from the magnetic resonance imaging scans. The numerical results are obtained using the hybrid finite element/boundary element method (FEM/BEM) formulation for the electromagnetic model, while the thermal dosimetry model based on the use of Pennes bioheat transfer equation is treated via FEM technique. Although qualitatively similar distributions of temperature increase have been obtained for both eye models, further analysis showed that the compound eye model is more suitable when the polarization of the incident EM wave is taken into account. On the other hand, the extracted eye model, due to much easier implementation compared to the compound model, can be found helpful when carrying out the preliminary dosimetric analysis.