Optical feedback system for vision correction

A - Human Necessities – 61 – B

Patent

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A61B 18/18 (2006.01) A61B 3/103 (2006.01) A61B 3/12 (2006.01) A61F 9/01 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2393886

The invention provides laser eye surgery device (12), system (10), and methods which measure the refractive error in the eye before, during, and/or after vision correction surgery. The invention allows adjustments during the vision correction operation, and allows qualitative and/or quantitative measurements of the progressive photorefractive treatment by projecting and imaging reference images through the cornea and other components of the ocular optical system (10). A slope of an image quality value such as an Optical Transfer Function may be monitored during the procedure to help determine when to terminate treatment.

L'invention concerne un dispositif (12) de chirurgie oculaire par laser, un système (10) et un procédé permettant de mesurer l'erreur de réfraction de l'oeil avant, pendant et/ou après une opération chirurgicale destinée à la correction de la vue. Le mode de réalisation décrit dans la présente invention permet d'effectuer des ajustements pendant une opération de correction de la vue, et il permet des mesures qualitatives et/ou quantitatives du traitement photorétractif progressif par projection et visualisation d'images de référence à travers la cornée et autres composants du système optique oculaire (10). Une pente de la valeur de qualité d'une image, telle qu'une fonction de transfert optique, peut être contrôlée pendant l'opération de manière à pouvoir déterminer à quel moment il convient d'arrêter le traitement.

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