Patent ID: 6706036
Filing Date: 2004-03-16
Classification: A61B,A61F,B23K,G02B,G02F,H01S

Abstract:
A scanning laser device for ophthalmic surgery, the device comprising:a laser source for generating a beam of laser pulses, each pulse having a Gaussian-like tissue ablation profile; a scanning means for directing the beam of the laser pulses; a computer device coupled to the scanning means for directing each laser pulse to a location on the cornea; the computer device including: a first executable program calculating a pulse deposit pattern by calculating the location of each laser pulse on the tissue based on overlap of the Gaussian-like ablation profile, and optimizing the smoothness of the ablated surface by optimizing the locations and overlaps of the laser pulses; and a second executable program for directing each of the lasers pulses to locations on the tissue in accordance with the pulse locations provided by the first executable program; and an eye movement tracking means, such that each laser pulse is deposited to its intended location on a cornea when the eye moves during the eye surgery, the eye movement tracking means comprising: eye positional indicator; and laser beam deflecting means deflecting the laser beam to follow the movement of the eye.