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Proceedings Paper

Image-based digital motion and aberration compensation in laser Doppler holography of the eye fundus (Conference Presentation)
Author(s): Michael Atlan; Armand Touminet; Thomas Andal; Leo Puyo; Michel Pâques

Paper 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.

Paper Details

Date Published: 11 March 2020
Proc. SPIE 11248, Adaptive Optics and Wavefront Control for Biological Systems VI, 112480N (11 March 2020); doi: 10.1117/12.2543944
Show Author Affiliations
Michael Atlan, Institut Langevin Ondes et Images (France)
Armand Touminet, Institut Langevin Ondes et Images (France)
Thomas Andal, Institut Langevin Ondes et Images (France)
Leo Puyo, Institut Langevin Ondes et Images (France)
Michel Pâques, Ctr. Hospitalier National d'Opthalmologie des Quinze-Vingts (France)

Published in SPIE Proceedings Vol. 11248:
Adaptive Optics and Wavefront Control for Biological Systems VI
Thomas G. Bifano; Sylvain Gigan; Na Ji, Editor(s)

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