Systems and methods for analysis of corneal topography with...

A - Human Necessities – 61 – B

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A61B 3/107 (2006.01) A61B 5/00 (2006.01) A61F 9/01 (2006.01)

Patent

CA 2461822

Systems (10, 30, 70, 120, 140, 160) and methods provide convexity map data (122) associated with captured surface image data of a cornea. The convexity map data (122) is determined by transforming an elevation map data set (146) into a convexity map data set (122). Convexity is computed as the negative of the Laplacian of the local elevation. One or more statistical parameters can be associated with the convexity map data set (122) and employed to derive indices (128). The indices (128) can be utilized to diagnosis a corneal condition 130.

L'invention concerne des systèmes et des procédés fournissant des données de carte de convexité associées aux données d'image de surface cornéenne capturée d'une cornée. Ces données de carte de convexité sont déterminées par la transformation d'un ensemble de données de carte d'élévation en un ensemble de données de carte de convexité. La convexité est calculée en tant que valeur négative du laplacien de l'élévation locale. Au moins un paramètre statistique peut être associé à l'ensemble de données de carte de convexité et utilisé pour obtenir des indices. Ces indices peuvent être utilisés pour diagnostiquer une affection de la cornée.

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