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Computed SAR and thermal elevation in a 0.25-mm 2-D model of the human eye and head in response to an implanted retinal stimulator - part II: results

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5 Author(s)
Lazzi, G. ; Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA ; DeMarco, S.C. ; Wentai Liu ; Weiland, J.D.
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This is the second of a series of two papers on the thermal increase in the human eye and head in response to an implanted retinal stimulator. This paper provides specific absorption rates induced in the human head by the extraocular unit and the temperature increases associated with induced electromagnetic fields and power dissipation of the implanted microchip. Results are provided for different assumptions about choroid blood flow. It is shown that computed results associated with the power dissipation of the implanted microchip, corresponding to temperature increases of approximately 0.6°C in the midvitreous of the eye and 0.2°C in the retina, closely parallel in-vivo experimental results in animals.

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Antennas and Propagation, IEEE Transactions on  (Volume:51 ,  Issue: 9 )