Mr. Dan Zhu Profile

Dan Zhu

at Nanjing Univ of Science and Technology

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Proceedings Article | 10 February 2017 Paper

Analysis of the scattering performance of human retinal tissue layers

Dan Zhu, Zhisan Gao, Haishui Ye, Qun Yuan

Proceedings Volume 10250, 1025007 (2017) https://doi.org/10.1117/12.2266646

KEYWORDS: Scattering, Tissues, Polarization, Radiative transfer

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Human retina is different from other ocular tissues, such as cornea, crystalline lens and vitreous because of high scattering performance. As an anisotropic tissue, we cannot neglect its impact on the polarization state of the scattered light. In this paper, Mie scattering and radiative transfer theory are applied to analyze the polarization state of backscattered light from four types of retinal tissues, including neural retina, retinal pigment epithelial (RPE), choroid and sclera. The results show that the most backscattered zones in different depths have almost the same electrical fields of Jones vector, which represents the polarization state of light, whether neural retina layer is under normal incidence or oblique incidence. Very little change occurs in the polarization of backscattered light compared to that of the incident light. Polarization distribution of backward scattered light from neural retina layer doesn’t make apparent effects on polarization phase shifting in spectral domain OCT because its thickness is far less than photon mean free path, while other retinal tissues do not meet this rule.

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