Device for ophthalmologic, particularly refractive, laser...

Details Device for ophthalmologic, particularly refractive, laser... Device for ophthalmologic, particularly refractive, laser...

A - Human Necessities

61

F

A61F 9/01 (2006.01)

Patent

CA 2729721

An apparatus for ophthalmological, in particular refractive, laser surgery includes a laser-beam source (20) for emitting a focused treatment laser beam (20') and also includes an optical-coherence interferometric measuring device (34), for example an OLCR pachymeter, for measuring the z-position of a predetermined point of an eye to be treated in the coordinate system of the laser-surgery apparatus. A computer (C) serving as evaluating and control unit has been set up to assess, on the basis of the measured z-position, whether a desired treatment point of the eye in the z-direction falls in the focal plane of the treatment laser beam or is offset in relation to said plane. Depending on whether or not the patient is correctly positioned in relation to the focal plane, the computer (C) can bring about a range of actions.

L'invention concerne un dispositif de chirurgie laser, notamment réfractive, en ophtalmologie, comportant une source de faisceau laser (20) destinée à émettre un faisceau laser focalisé de traitement (200) et un dispositif d'interférométrie (34) optique cohérente, par exemple un pachymètre OLCR, destiné à mesurer la position z d'un point défini d'un oeil à traiter dans le système de coordonnées du dispositif de chirurgie laser. Un calculateur (C) servant d'unité de commande et d'évaluation est aménagé de manière à évaluer, sur la base de la position z mesurée, si un emplacement de traitement souhaité de l'oeil en direction z se trouve dans le plan focal du faisceau laser de traitement ou s'il est décalé par rapport à celui-ci. Le calculateur (C) peut provoquer différentes réactions en fonction de la position correcte ou non du patient par rapport au plan focal.

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