Apparatus for operation on a cornea using laser-beam

Details Apparatus for operation on a cornea using laser-beam Apparatus for operation on a cornea using laser-beam

1994-03-29

1997-06-10

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 4, A61B 1700, A61N 506

Patent

active

056371098

ABSTRACT:
An apparatus for ablating the surface of the cornea using a laser beam to correct the refractive of an eye to be operated having a laser source for emitting a laser beam having a non-uniform intensity distribution of Gaussian distribution and the like to one direction and a uniform beam intensity in another direction, an ablation optical system for ablating the surface of the cornea by the laser beam emitted from the laser source, translational scanning device for scanning the laser beam in the direction of non-uniform intensity distribution, beam rotating device for rotating the laser beam emitted from the laser source round the optical axis in the ablation optical system, control device which controls the beam rotation by the beam rotating device whenever the laser beam is scanned in parallel by the scanning device.

REFERENCES:
patent: 4370540 (1983-01-01), Davis et al.
patent: 4732148 (1988-03-01), L'Esperance, Jr.
patent: 4911711 (1990-03-01), Telfair et al.
patent: 5102409 (1992-04-01), Balgorod
patent: 5108388 (1992-04-01), Trokel
patent: 5163934 (1992-11-01), Munnerlyn

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