摘要:
Systems, methods, and computer program products are provided for the administration of ablation profiles during refractive surgery treatments. Basis data framework techniques enable the implementation of ablation profiles having various shapes, resulting in increased ablation accuracy when treating certain vision conditions. Exemplary basis data architecture approaches are configured to efficiently operate with annular, elliptical, and slit laser beam shapes.
摘要:
An OCT-augmented surgical instrument able to correct for undesired movement, as well as a system for use with such a surgical instrument and a method of correcting for undesired movement during surgery using OCT.
摘要:
A laser system calibration method and system are provided. In some methods, a calibration plate may be used to calibrate a video camera of the laser system. The video camera pixel locations may be mapped to the physical space. A xy-scan device of the laser system may be calibrated by defining control parameters for actuating components of the xy-scan device to scan a beam to a series of locations. Optionally, the beam may be scanned to a series of locations on a fluorescent plate. The video camera may be used to capture reflected light from the fluorescent plate. The xy-scan device may then be calibrated by mapping the xy-scan device control parameters to physical locations. A desired z-depth focus may be determined by defining control parameters for focusing a beam to different depths. The video camera or a confocal detector may be used to detect the scanned depths.
摘要:
An apparatus including a wavefront sensor including a light source (172) configured to illuminate a subject eye, a detector (122), an image sensor (162) configured to output an image of the subject eye, a first beam deflecting element (112) configured to intercept a wavefront beam returned from a subject eye when the subject eye is illuminated by the light source (172) and configured to direct a portion of the wavefront from the subject eye through an aperture (118) toward the detector (122), and a controller coupled to the light source (172), the image sensor (162) and the beam deflecting element (112), configured to process the image to determine transverse movement of the subject eye and to control the beam deflecting element (112) to deflect and project through the aperture (118) portions of an annular ring portion of the wavefront and further configured to pulse the light source (172) at a firing rate to sample selected portions of the annular ring at the detector (122), to process the image of the subject eye to calculate transverse movement of the subject eye and to orient the beam deflecting element (112) at a DC offset angle to compensate transverse movement of the subject eye.