LASER BEAM OPHTHALMOLOGICAL SURGERY METHOD AND APPARATUS

摘要

A laser beam ophthalmological surgery method for ablating a cornea (16) of a patient's eye includes the steps of generating a laser beam (12) and directing the generated laser beam onto a scanner (13) and scanning the laser beam (12) in a random scanning pattern with a generated random scanning pattern signal on the surface of the cornea (16) of a patient to ablate the surface of the cornea of a patient's eye. A computer (17) generates the random pattern laser beam control signal which controls the scanner (13) to scan in the random scanning pattern over the cornea (16) and includes selecting a database of nonrandom scanning points to scan the laser beam onto the cornea (16) of a patient's eye and then randomly selects the non-random scanning points for the random scanning of predetermined scanning points. A laser ophthalmological surgery apparatus (10) is provided which includes a laser (11) for generating a laser beam (12) along with a scanner (13) positioned for receiving the laser beam (12) and producing a predetermined scanning pattern onto the cornea (16) of an eye. A computer (17) is used to generate a random scanning pattern signal and is connected to the scanner (13) for controlling the scanner in a random overlapping scanning beam pattern over a predetermined area.