Abstract: System and method of photoaltering a region of a material using a pulsed laser beam. The method includes randomly scanning the pulsed laser beam in the region, and creating a separation between a first layer of the material and a second layer of the material at the region. The system includes a laser producing a pulsed laser beam, a controller transmitting a signal, and a scanner coupled to the controller. The scanner randomly scans the pulsed laser beam in the region in response to the signal.

Abstract: Systems and methods of incising a portion of a material include creating a sub-surface separation in a region of the material, and incising a periphery of the region with a pulsed laser beam to produce an edge of the portion. The edge includes a periodically varying shape to secure the portion to the material when the portion is reintegrated. The system includes a laser producing the pulsed laser beam, a scanner operable in response to a control signal, and a controller coupled to the scanner. The controller produces the control signal. In response to the control signal, the scanner creates a sub-surface separation in the region with the pulsed laser beam and incises the periphery of the region with the pulsed laser beam to produce the edge with the periodically varying shape.

Abstract: A system for interfacing a surgical laser with an eye includes a first sensing element to couple to an output surface of the laser, an interface lens having second sensing element coupled to a first surface of the interface lens, and a detector coupled to the first sensing element. A second surface of the interface lens contacts the eye. The detector determines when the first sensing element contacts the second sensing element. A method for aligning the laser with the eye includes coupling the laser to the patient interface, sensing an electrical change indicating a position of the output surface with the interface lens, comparing the electrical change with a predetermined value to produce a correction, and re-positioning the laser with the correction.