Depth-sensitive adaptive deconvolution of retinal images

Andrey V. Larichev; Nikita G. Irochnikov; Ilia P. Nikolaev; K. Nesterouk; Alexis V. Kudryashov

doi:10.1117/12.405936

3 November 2000 Depth-sensitive adaptive deconvolution of retinal images

Andrey V. Larichev, Nikita G. Irochnikov, Ilia P. Nikolaev, K. Nesterouk, Alexis V. Kudryashov

Proceedings Volume 4162, Controlling Tissue Optical Properties: Applications in Clinical Study; (2000) https://doi.org/10.1117/12.405936
Event: EOS/SPIE European Biomedical Optics Week, 2000, Amsterdam, Netherlands

Abstract

The capability of resolving fine details on retinal images plays a key role in early diagnostic of vision loss. Biochemical and morphological features, which may be present in the early stages of many retinal diseases, cannot be detected today with current funduscopic instruments because of the losses in spatial resolution introduced by the ocular medium and cornea. One of the ways of the solution of such a problem is to use the adaptive optical systems first for measuring phase distortions and then for its suppression. In our work we suggest the innovative approach that includes two stages of adaptive correction. On the first stage a Shack-Hartman wavefront sensor and modal flexible mirror is used for low-order aberration correction. On the second stage a computer post-processing, or deconvolution, of the residual aberrations is done using the information on the aberrations measured by the sensor. In our report we present the specific design of the Shack-Hartman wavefront sensor suitable for measurements of human eye aberrations. The characteristics of a modal bimorph corrector are discussed. The features of deconvolution technique are outlined.

Citation Download Citation

Andrey V. Larichev, Nikita G. Irochnikov, Ilia P. Nikolaev, K. Nesterouk, and Alexis V. Kudryashov "Depth-sensitive adaptive deconvolution of retinal images", Proc. SPIE 4162, Controlling Tissue Optical Properties: Applications in Clinical Study, (3 November 2000); https://doi.org/10.1117/12.405936

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