System and method for ophthalmic laser surgery on a cornea

Details System and method for ophthalmic laser surgery on a cornea System and method for ophthalmic laser surgery on a cornea

A - Human Necessities

61

B

A61B 18/18 (2006.01)

Patent

CA 2644455

A system and method for ophthalmic laser surgery is disclosed. An optical scanner is employed to create a thickness profile for the cornea. A lens is placed in contact with the anterior surface of the cornea. The thickness profile is then used to identify a scan region within the cornea, wherein the scan region is disposed at approximately a uniform distance from the posterior surface of the cornea. A focal point of a laser beam is thereafter scanned along a path within the scan region to create an intracorneal incision.

La présente invention concerne un système et un procédé pour une chirurgie laser ophtalmique. Un scanner optique est utilisé pour créer un profil d'épaisseur pour la cornée. Une lentille est placée en contact avec la surface antérieure de la cornée. Le profil d'épaisseur est ensuite utilisé pour identifier une région de balayage à l'intérieur de la cornée, celle-ci étant disposée approximativement à une distance uniforme de la surface postérieure de la cornée. Un foyer d'un faisceau laser est après cela balayé le long d'un trajet dans la région de balayage afin de créer une incision dans la cornée.

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