Raaymakers BW, Kroeze H, Lagendijk JJW (2007):
The aim of
this study was to determine SAR levels and temperature increases
within a model of a human eye during RFR exposure from a dipole
antenna representing a cell phone. Frequencies of 900, 1500,
and 1800 MHz were used, with an output power of 1 W. A detailed
anatomical equivalent of the human eye and orbit was placed in
a whole-head model. The temperature rises were determined by
taking the blood flow into account either by the Pennes bioheat
model or by including the discrete vasculature (DIVA).
Peak SARs in
the humour were 4.5, 7.7, and 8.4 W/kg for 900, 1500, and1800
MHz respectively. Averaged over the whole eyeball, the SARs were
1.7, 2.5, and 2.2 W/kg.
temperature increases in the eye during exposure were 0.22, 0.27,
and 0.25°C for 900, 1500, and1800 MHz respectively, using
the DIVA method. For the Pennes model, the increases were 0.19,
0.24, and 0.22°C. The peak temperature was in the anterior
part of the lens for the 900 MHz frequency, in the posterior
lens for the 1500, and close to the centre of the eyeball for
though, for these artificial exposure conditions, the SAR values are not in
compliance with safety guidelines, the maximum temperature rises in the eye
are too small to give harmful effects".