AUTOMATED CALIBRATION OF LASER SYSTEM AND TOMOGRAPHY SYSTEM WITH FLUORESCENT IMAGING OF SCAN PATTERN
    21.
    发明申请
    AUTOMATED CALIBRATION OF LASER SYSTEM AND TOMOGRAPHY SYSTEM WITH FLUORESCENT IMAGING OF SCAN PATTERN 审中-公开
    激光扫描系统的自动校准与扫描图形的荧光成像

    公开(公告)号:US20150282988A1

    公开(公告)日:2015-10-08

    申请号:US14666743

    申请日:2015-03-24

    Abstract: 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.

    Abstract translation: 提供了一种激光系统校准方法和系统。 在一些方法中,校准板可用于校准激光系统的摄像机。 摄像机像素位置可以映射到物理空间。 激光系统的xy扫描装置可以通过定义用于启动xy扫描装置的部件的控制参数来校准,以将光束扫描到一系列位置。 可选地,光束可以被扫描到荧光板上的一系列位置。 摄像机可用于捕获来自荧光板的反射光。 然后可以通过将xy扫描装置控制参数映射到物理位置来校准xy扫描装置。 可以通过定义用于将光束聚焦到不同深度的控制参数来确定期望的z深度焦点。 摄像机或共焦检测器可用于检测扫描深度。

    Microfemtotomy methods and systems
    22.
    发明授权

    公开(公告)号:US10888459B2

    公开(公告)日:2021-01-12

    申请号:US15952147

    申请日:2018-04-12

    Abstract: Methods and systems for performing laser-assisted surgery on an eye form one or more small anchoring capsulotomies in the lens capsule of the eye. The one or more anchoring capsulotomies are configured to accommodate corresponding anchoring features of an intraocular lens and/or to accommodate one or more drug-eluting members. A method for performing laser-assisted eye surgery on an eye having a lens capsule includes forming an anchoring capsulotomy in the lens capsule and coupling an anchoring feature of the intraocular lens with the anchoring capsulotomy. The anchoring capsulotomy is formed by using a laser to incise the lens capsule. The anchoring feature can protrude transverse to a surface of the intraocular lens that interfaces with the lens capsule adjacent to the anchoring capsulotomy.

    System and method for plasma-mediated modification of tissue

    公开(公告)号:US10478341B2

    公开(公告)日:2019-11-19

    申请号:US15612920

    申请日:2017-06-02

    Abstract: A method for cataract surgery on an eye of a patient includes scanning a first focus position of a first pulsed laser beam at a first pulse energy in a first scanning pattern to photodisrupt a tissue structure of a lens with a plurality of pulses of the first laser beam to form one or more cuts within the lens, the cuts being short of reaching a side edge of the lens and being configured to divide the lens into two or more segments which are attached to each other in regions adjacent the side edge of the lens; and afterwards, completely separating the two or more segments of the lens from each other by scanning a second focus position of a second pulsed laser beam having a second pulse energy higher than the first pulse energy in a second scanning pattern that is co-registered to the first scanning pattern.

    Confocal detection to minimize capsulotomy overcut while dynamically running on the capsular surface

    公开(公告)号:US10363173B2

    公开(公告)日:2019-07-30

    申请号:US14611661

    申请日:2015-02-02

    Abstract: Embodiments of this disclosure disclose an imaging system, including an eye interface device, a scanning assembly, a beam source, a free-floating mechanism, and a detection assembly. The beam source generates an electromagnetic radiation beam. The detection assembly generates a signal indicative of an intensity of a portion of the electromagnetic radiation beam reflected from the focal point location. A subsequent focal point of the electromagnetic radiation beam may be adjusted per the measured intensity signal. In some embodiments, an intensity signal below a lower threshold value may suggest a depth increase for a subsequent focal point. An intensity signal above an upper threshold value may suggest a depth decrease for a subsequent focal point. And, an intensity signal between the lower and upper thresholds may suggest a depth be maintained for a subsequent focal point. The focal point may be adjusted after each pulse or after a plurality of pulses.

    Laser eye surgery system calibration

    公开(公告)号:US10314746B2

    公开(公告)日:2019-06-11

    申请号:US14069703

    申请日:2013-11-01

    Abstract: The amount of energy to provide optical breakdown can be determined based on mapped optical breakdown thresholds of the treatment volume, and the laser energy can be adjusted in response to the mapped breakdown thresholds. The mapping of threshold energies can be combined with depth and lateral calibration in order to determine the location of optical breakdown along the laser beam path for an amount of energy determined based on the mapping. The mapping can be used with look up tables to determine mapped locations from one reference system to another reference system.

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