Method and device for completely correcting visual defects...

A - Human Necessities – 61 – F

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Details

A61F 9/01 (2006.01) A61F 9/013 (2006.01) B23K 26/06 (2006.01) G01J 9/00 (2006.01) A61B 3/107 (2006.01) A61B 3/117 (2006.01)

Patent

CA 2346982

The invention relates to a method and to a device for completely correcting visual defects of the human eye. The invention mentions combinations of measuring and treatment methods that allow the complete correction of defects of the human eye if applied according to the invention. Measuring methods are used that precisely detect the surface of the cornea and that also register the aberrations that occur in the beam path up to the retina. The computer- assisted evaluation of these measurement results combined with the calculation of optimally corrected lenses (for example after a cataract operation) or of optimally correcting cornea surfaces makes it possible to produce a patient- specific lens and/or to shape the retina so that it optimally corrects the aberration. To this end, the invention preferably uses a spot scanning excimer laser system and makes use of the topography of the eye.

La présente invention concerne un procédé et un dispositif permettant de corriger complètement des défauts visuels de l'oeil humain. Cette invention concerne des combinaisons de procédés de mesure et de traitement qui permettent, s'ils sont appliqués selon l'invention, la correction complète de l'oeil humain. Des procédés de mesure qui permettent de déterminer de façon précise la surface de la cornée et d'enregistrer les aberrations apparaissant dans le trajet des faisceaux jusqu'à la rétine sont utilisés. L'exploitation assistée par ordinateur de ces résultats de mesure, combinée avec le calcul de lentilles oculaires corrigées de façon idéale (par exemple après des opérations de la cataracte) ou de surfaces cornéennes corrigées de façon idéale, permet de produire une lentille spécifique au patient et/ou de former la rétine de manière qu'elle présente une correction idéale, de préférence par utilisation d'un système laser excimère à balayage par point et de la topographie de l'oeil.

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