Visx, Inc.

Michael Persiantsev

Jan C Wysopal

Carl F Knopp

William D Fountain

H Alfred Sklar

Jerzy Orkiszewski

A method and system is described that greatly improves the safety and efficacy of ophthalmic laser surgery. The method and system are applicable to precise operations on a target subject to movement during the procedure. The system may comprise the following elements: (1) a user interface, (2) an imaging system, which may include a surgical microscope, (3) an automated tracking system that can follow the movements of an eye, (4) a laser, (5) a diagnostic system, and (6) a fast reliable safety means, for automatically interrupting the laser firing.

Automated laser workstation for high precision surgical and industrial interventions

A method, apparatus and system for template-controlled, precision laser interventions is described that greatly improves interventions such as laser microsurgery, particularly ophthalmic surgery, and industrial micromachining. The instrument and system are applicable to those specialties wherein the positioning accuracy of laser lesions is critical, such as whenever precise operations on a target or series of targets subject to movement during the procedure are to be effected. The system includes a user interface, wherein the user can either draw, adjust, or designate particular template patterns overlaid on a live video images of the target (such as the cornea) which are stabilized and produce an apparently stationary display of the target and provide the means for converting the template pattern into a sequence of automatic motion instructions to direct a laser beam to be sequentially applied replicating the designated template pattern into the corresponding surgical or industrial site.

A method, apparatus and system for template-controlled, precision laser interventions is described that greatly improves the accuracy, speed, range, reliability, versatility, safety, and efficacy of interventions such as laser microsurgery, particularly ophthalmic surgery, and industrial micromachining. The instrument and system are applicable to those specialties wherein the positioning accuracy of laser lesions is critical, wherever accurate containment of the spatial extent of a laser lesion is desirable, and/or whenever precise operations on a target or series of targets subject to movement during the procedure are to be effected. The system thus comprises the following key elements: (1) a user interface, consisting of a video display, microprocessor and controls, (2) an imaging system, which may include a surgical video microscope with zoom capability, (3) an automated 3D target acquisition and tracking system that can follow the movements of the subject tissue, for example an eye, during the operation, thus allowing the surgeon/user to predetermine his firing patern based on an image which is automatically stabilized over time, (4) a laser, with which can be focused so that only the precise lesions described by the user interface are effected, (5) a diagnostic system, incorporating a mapping and topography means for measuring precise surface shapes prior to and subsequent to a procedure, said measurements to be executed on-line within time scales not limited to human response times, and (6) a fast reliable safety means, whereby the laser firing is interrupted automatically, should any conditions arise to warrant such interruption of the procedure.

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Hayward, CA, United States of America

Michael Persiantsev