Image-based digital motion and aberration compensation in laser Doppler holography of the eye fundus (Conference Presentation)

Michael Atlan; Armand Touminet; Thomas Andal; Leo Puyo; Michel Pâques

doi:10.1117/12.2543944

11 March 2020 Image-based digital motion and aberration compensation in laser Doppler holography of the eye fundus (Conference Presentation)

Michael Atlan, Armand Touminet, Thomas Andal, Leo Puyo, Michel Pâques

Author Affiliations +

Proceedings Volume 11248, Adaptive Optics and Wavefront Control for Biological Systems VI; 112480N (2020) https://doi.org/10.1117/12.2543944
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Blood flow dynamics in the human retina can be assessed by laser Doppler perfusion imaging by digital holography with near-infrared light, but motion and aberrations of the eye can prevent accurate coherent image formation with standard free-space wave propagation methods. We present a fully digital aberration correction scheme in post-processing by tuning a multi-parameter phase mask in the reciprocal plane of the retina, through iterative optimization of the quality of power Doppler images. The parameters are the amplitudes of low-order Zernike polynomials controlling shift/tilt, defocus and astigmatism. Numerical correction for motion and ametropia reveals smaller vessels than standard reconstruction.

Conference Presentation

Citation Download Citation

Michael Atlan, Armand Touminet, Thomas Andal, Leo Puyo, and Michel Pâques "Image-based digital motion and aberration compensation in laser Doppler holography of the eye fundus (Conference Presentation)", Proc. SPIE 11248, Adaptive Optics and Wavefront Control for Biological Systems VI, 112480N (11 March 2020); https://doi.org/10.1117/12.2543944

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