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Proceedings Paper

Wavefront shaping to correct intraocular scattering
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Paper Abstract

Cataracts is a common ocular pathology that increases the amount of intraocular scattering. It degrades the quality of vision by both blur and contrast reduction of the retinal images. In this work, we propose a non-invasive method, based on wavefront shaping (WS), to minimize cataract effects. For the experimental demonstration of the method, a liquid crystal on silicon (LCoS) spatial light modulator was used for both reproduction and reduction of the realistic cataracts effects. The LCoS area was separated in two halves conjugated with the eye’s pupil by a telescope with unitary magnification. Thus, while the phase maps that induced programmable amounts of intraocular scattering (related to cataract severity) were displayed in a one half of the LCoS, sequentially testing wavefronts were displayed in the second one. Results of the imaging improvements were visually evaluated by subjects with no known ocular pathology seeing through the instrument. The diffracted intensity of exit pupil is analyzed for the feedback of the implemented algorithms in search for the optimum wavefront. Numerical and experimental results of the imaging improvements are presented and discussed.

Paper Details

Date Published: 23 February 2018
PDF: 5 pages
Proc. SPIE 10502, Adaptive Optics and Wavefront Control for Biological Systems IV, 105020Q (23 February 2018); doi: 10.1117/12.2290388
Show Author Affiliations
Pablo Artal, Lab. de Óptica Univ. de Murcia (Spain)
Augusto Arias, Lab. de Óptica Univ. de Murcia (Spain)
Enrique Fernández, Lab. de Óptica Univ. de Murcia (Spain)

Published in SPIE Proceedings Vol. 10502:
Adaptive Optics and Wavefront Control for Biological Systems IV
Thomas G. Bifano; Joel Kubby; Sylvain Gigan, Editor(s)

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