Statistical properties of stochastic electromagnetic beams passing through crystalline human eye lens

Abstract

The statistical properties of stochastic electromagnetic beams passing through crystalline human eye onto the retina are studied. Using both the curved end faces and plane-parallel end faces models of human eye lens, a comparative study of the spectral density (SD), the spectral degree of polarization (SDOP) and the spectral degree of coherence (SDOC) of stochastic electromagnetic beams passing through crystalline human eye onto the retina is performed. It is shown that for the nearly incoherent electromagnetic beams, the SD and SDOP change non-monotonously with the propagation distance for plane-parallel end faces model, which is much different from the case when the human eye lens takes on curved end faces model, where the SD and SDOP change monotonously with the propagation distance. When the propagation distance is large enough, the SD decreases, whereas the SDOP and the SDOC increase with increasing lens thickness and decreasing lens equatorial radius, respectively. The validity of our results is interpreted physically.