Systems and methods for wavefront reconstruction for...

A - Human Necessities – 61 – B

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A61B 3/107 (2006.01) A61B 3/103 (2006.01) A61F 9/01 (2006.01)

Patent

CA 2644545

Systems, methods, and devices for determining an aberration in an optical tissue system of an eye are provided. Techniques include inputting optical data from the optical tissue system of the eye, where the optical data includes set of local gradients corresponding to a non-circular shaped aperture, processing the optical data with an iterative Fourier transform to obtain a set of Fourier coefficients, converting the set of Fourier coefficients to a set of modified Zernike coefficients that are orthogonal over the non-circular shaped aperture, and determining the aberration in the optical tissue system of the eye based on the set of modified Zernike coefficients.

La présente invention concerne des systèmes, procédés, et dispositifs visant à déterminer une aberration affectant un système tissulaire optique oculaire. Un tel procédé consiste à introduire des données optiques provenant du système tissulaire optique oculaire, lesquelles données optiques réunissent un ensemble de gradients locaux correspondant à une ouverture de forme non circulaire. Le procédé consiste ensuite à traiter les données optiques au moyen d'une transformée de Fourier itérative pour obtenir un ensemble de coefficients de Fourier, puis à convertir l'ensemble de coefficients de Fourier en un ensemble de coefficients de Zernike modifiés orthogonaux par rapport à l'ouverture de forme non circulaire, et enfin à déterminer l'aberration affectant le système tissulaire optique oculaire sur la base des coefficients de Zernike modifiés.

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