Ablation apparatus for ablating a cornea by laser beam

Details Ablation apparatus for ablating a cornea by laser beam Ablation apparatus for ablating a cornea by laser beam

1994-10-25

1995-08-29

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 4, A61B 1700, A61N 506

Patent

active

054456339

ABSTRACT:
An ablation apparatus for ablating the surface of a cornea by laser beam having a laser source for emitting a laser beam, an ablation optical system for ablating the surface of a cornea by the laser beam emitted from the laser source, an diaphragm with a variable diameter for changing an ablation area on the cornea, a cornea shape forming device for forming a desired shape of cornea's optical zone by superposing the irradiation through the ablation optical system, an input device for inputting a data to determine a transition zone as to be connected the optical zone with a non-ablation area smoothly, and a control device for controlling the diameter of the diaphragm by determining the shape of the transition zone based on the data inputted through the input device.

REFERENCES:
patent: 4732148 (1988-03-01), L'Esperance, Jr.
patent: 4911711 (1990-03-01), Telfair et al.
patent: 4941093 (1990-07-01), Marshall et al.
patent: 4994058 (1991-02-01), Raven et al.
Japanese Patent Application No. Hei. 2-416767 which corresponds to U.S. patent application Ser. No. 07/812,819, a copy of the specification of which is filed herewith.

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