Laser sculpting method and system

Details Laser sculpting method and system Laser sculpting method and system

1994-04-25

1998-12-15

Nasser, Robert L.

Surgery

Instruments

Light application

606 4, A61N 506

Patent

active

058490060

ABSTRACT:
A method and system are provided for eroding or ablating a shaped volume of an eye's corneal tissue in accordance with the treatment of a specified eye condition. To determine the laser beam shot pattern, a plurality of laser beam shots of uniform intensity are first selected to form a uniform shot pattern of uniform shot density. The laser beam shots applied in accordance with the uniform shot pattern of uniform shot density would be capable of eroding a volume of the corneal tissue of uniform height. The volume of uniform height is approximately equivalent to that of the shaped volume. The laser beam shots are applied to the corneal tissue in a spatially distributed pattern spread over an area approximately equivalent to the surface area of the shaped volume to be eroded. The spatially distributed pattern extends the uniform shot pattern in fixed angles from a reference position on the shaped volume representative of the shaped volume's axis of symmetry. Shot density for the laser beam shots changes in correspondence with distance from the reference position.

REFERENCES:
patent: 4669466 (1987-06-01), L'Esperance
patent: 4729372 (1988-03-01), L'Esperance, Jr.
patent: 4941093 (1990-07-01), Marshall et al.

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