Amo Manufacturing USA, LLC

Amo Development, LLC

Visx, Inc.

Henry Price

Ihor V Berezhnyy

Anthony Tang

Guangming Dai

Anatoly Fabrikant

Mark Ray Lee

Herrmann J Glockler

Benjamin A Logan

Stephen Calebotta

Jeff Sobiech

Systems are provided for delivering a calibrated ultraviolet radiation pulse at a treatment plane during a laser-ablation treatment of a patient's eye. Exemplary systems include an ultraviolet radiation source, and a fluorescent plate positioned to receive an initial ultraviolet radiation pulse produced by the ultraviolet radiation source. The fluorescent plate generates a visible light pulse in response to the initial ultraviolet radiation pulse. Exemplary systems further include a photon detector positioned to receive the visible light pulse for generating an electrical signal in response to the visible light pulse, and a processing module configured to determine an energy of the initial ultraviolet radiation pulse based on an amplitude and a decay time of the electrical signal, determine an energy calibration signal based on the determined energy of the initial ultraviolet radiation pulse, and provide the energy calibration signal to the ultraviolet radiation source for producing the calibrated ultraviolet radiation pulse.

Ultraviolet radiation sensor systems and methods for laser pulse energy control in eye surgery

Embodiments of the present invention generally describe systems, devices, and methods for directly measuring pulse profiles during pulse delivery. In some embodiment, the pulse profiles may be measured while the pulse is delivered to ablate a material. Embodiments, may calculate ablation spot parameters based on the pulse profiles and may refine one or more subsequent laser pulses based on deviations from the calculated ablation spot parameters from desired ablation spot parameters. In some embodiments, a fluence profiler is provided. The fluence profiler may measure a pulse profile of a laser pulse from a portion of the laser pulse. The fluence profiler may utilize a UV radiation energy sensor device and a camera-based imager. The measurements from the UV radiation energy sensor device and the camera-based imager may be combined and scaled to provide a measured pulse profile that corresponds to the delivered pulse.

Systems and methods for laser beam direct measurement and error budget

Embodiments generally describe systems, devices, and methods for focusing and calibrating beam profilers. A test object is provided that may include an internal housing rotatable within an external housing. The internal housing may house a light source, a collimator, a filter, and/or a diffuser. A plate may be mounted to the internal housing and may include a plurality of markings. In some embodiments, to focus a beam profiler, the test object may be positioned adjacent the converter plate of a beam profiler. Marker images may be captured and a focus quality may be assessed therefrom. A position of the converter, objective, and/or camera of the beam profiler may be adjusted based on the focus quality. To calibrate, images of the markings in several rotational positions may be captured and used for calibration. The markings may be rotated to several positions by rotating the internal housing relative to the external housing.

Systems, devices, and methods for calibration of beam profilers

Laser eye surgery systems, methods, and devices makes use of a two-pivot scanning system for laterally deflecting the laser beam across the corneal surface to provide X-Y scanning. An imaging lens pivots about two eccentric axes extending along, but disposed beyond the laser beam. As the lens pivots, the beam will follow a substantially arc-shaped path. The eccentric axes are offset about the laser beam axis by about 90&deg;, and the system controller can compensate for the arc-shaped path deflections by adjusting the angular position of the imaging lens about complementary stage.

Two-pivot scanning for laser eye surgery

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San Jose, CA, United States of America

Henry Price