Polarization-optical visualization of eye inhomogeneities

Maris Ozolinsh; Gunta Papelba

doi:10.1117/12.407636

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22 November 2000 Polarization-optical visualization of eye inhomogeneities

Maris Ozolinsh, Gunta Papelba

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Proceedings Volume 4160, Photon Migration, Diffuse Spectroscopy, and Optical Coherence Tomography: Imaging and Functional Assessment; (2000) https://doi.org/10.1117/12.407636
Event: EOS/SPIE European Biomedical Optics Week, 2000, Amsterdam, Netherlands

Abstract

Polarization sensitive technique is reported for visualization of eye scattering and birefringent inhomogeneities using digital subtracting of eye images captured by a CCD camera for two orthogonal polarizations of light forming images in the CCD camera. For fast capturing of images the polarization plane of the backscattered light is periodically switched at 90 degrees by an electro-optical PLZT phase plate. This plate is placed close to the CCD camera together with a sheet polarizer inserted between camera and the phase plate. Polarization plane is switched applying the voltage 1200 V to the phase plate at a rate of 7.5 Hz. The technique improves visualization due to diminishing of the impact of eye movements and due to accumulation of the imaging digital data.

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Maris Ozolinsh and Gunta Papelba "Polarization-optical visualization of eye inhomogeneities", Proc. SPIE 4160, Photon Migration, Diffuse Spectroscopy, and Optical Coherence Tomography: Imaging and Functional Assessment, (22 November 2000); https://doi.org/10.1117/12.407636

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