Surgery – Instruments – Light application
Patent
1997-10-27
1999-12-07
Dvorak, Linda C. M.
Surgery
Instruments
Light application
606 5, A61B 1736
Patent
active
059975296
ABSTRACT:
An apparatus is provided for performing corneal refractive surgery by ablating a portion of a corneal surface of an eye. The apparatus includes a pulsed laser for producing a pulsed output beam of light. A scanning mechanism scans the output beam, and the output beam is operatively associated with the scanning mechanism such that the output beam may be scanned over a predetermined surface defined by a mathematically derived ablation layer boundary curve for each ablation layer. A controller is operatively associated with the scanning mechanism so as to deliver output beams to the predetermined surface such that center points of output beams may be disposed within the ablation layer boundary curve, on the ablation layer boundary curve, and outside but within a predetermined distance from a nearest point on the ablation layer boundary curve so as to integrate the edges of the ablation layer boundary curve to more closely correspond to the desired ablated shape.
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Han Xiaofeng
Tang Fuqian
Bollman William H.
Dvorak Linda C. M.
Gibson Roy
LaserSight Technologies Inc.
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