Varying a numerical aperture of a laser during lens fragmentation in cataract surgery

    公开(公告)号:US11154425B2

    公开(公告)日:2021-10-26

    申请号:US16522541

    申请日:2019-07-25

    Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

    Ophthalmic range finding
    12.
    发明授权
    Ophthalmic range finding 有权
    眼科测距

    公开(公告)号:US09521949B2

    公开(公告)日:2016-12-20

    申请号:US13798457

    申请日:2013-03-13

    Abstract: Systems and methods for analyzing the anatomy of a patient's eye with circular or rotated polarized laser beams, or with laser beams of different wavelengths are disclosed. One system includes a polarization beam-splitter and a quarter-wave plate, wherein the quarter-wave plate is configured to circularly rotate a laser beam received from a laser that is transmitted and passes through the polarization beam-splitter, and to transform a circularly rotated back-reflected beam to a linearly polarized laser beam that is perpendicular to the beam that was transmitted through the polarization beam-splitter. Substantially all of the back-reflected beam is directed to a photo-detector for analysis. A Faraday rotator subsystem may be substituted for a polarization beam-splitter. An optical system including a laser that generates a laser beam of a first wavelength for therapeutic treatment, and another laser that generates a laser beam of a second wavelength for measurement is also disclosed.

    Abstract translation: 公开了用圆形或旋转的偏振激光束或具有不同波长的激光束来分析患者眼睛的解剖结构的系统和方法。 一个系统包括偏振分束器和四分之一波片,其中四分之一波片被配置为使从传输并穿过偏振分束器的激光器接收的激光束循环旋转,并且循环地变换 将反向反射光束旋转到垂直于透射通过偏振光束分离器的光束的线偏振激光束。 基本上所有的反射光束被引导到光电检测器进行分析。 法拉第旋转器子系统可以代替偏振分束器。 还公开了一种包括产生用于治疗性处理的第一波长的激光束的激光器和产生用于测量的第二波长的激光束的另一激光器的光学系统。

    AUTOMATIC PATIENT POSITIONING WITHIN A LASER EYE SURGERY SYSTEM

    公开(公告)号:US20220269829A1

    公开(公告)日:2022-08-25

    申请号:US17662829

    申请日:2022-05-10

    Abstract: A laser eye surgery system produces a treatment beam that includes a plurality of laser pulses. An optical coherence tomography (OCT) subsystem produces a source beam used to locate one or more structures of an eye. The OCT subsystem is used to sense the distance between a camera objective on the underside of the laser eye surgery system and the patient's eye. Control electronics compare the sensed distance with a pre-determined target distance, and reposition a movable patient support toward or away the camera objective until the sensed distance is at the pre-determined target distance. A subsequent measurement dependent upon the spacing between the camera objective and the patient's eye is performed, such as determining the astigmatic axis by observing the reflection of a plurality of point source LEDs arranged in concentric rings off the eye.

    Varying a numerical aperture of a laser during lens fragmentation in cataract surgery

    公开(公告)号:US10369054B2

    公开(公告)日:2019-08-06

    申请号:US15200768

    申请日:2016-07-01

    Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

    Varying a numerical aperture of a laser during lens fragmentation in cataract surgery

    公开(公告)号:US10327954B2

    公开(公告)日:2019-06-25

    申请号:US15200825

    申请日:2016-07-01

    Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

    VARYING A NUMERICAL APERTURE OF A LASER DURING LENS FRAGMENTATION IN CATARACT SURGERY
    17.
    发明申请
    VARYING A NUMERICAL APERTURE OF A LASER DURING LENS FRAGMENTATION IN CATARACT SURGERY 审中-公开
    变化在激光手术中的镜片分割中的激光的数值孔径

    公开(公告)号:US20160310321A1

    公开(公告)日:2016-10-27

    申请号:US15200825

    申请日:2016-07-01

    Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

    Abstract translation: 这里公开的一些实施例提供了使用超短脉冲激光来分割病人眼睛的白内障透镜的方法。 该方法可以包括在患者眼睛的镜片内确定高NA区域,其中具有高数值孔径的激光束的锥角不被虹膜遮蔽,以及径向更靠近虹膜的低NA区域,其中 具有低数值孔径的激光束的锥角不被虹膜遮蔽。 激光透镜碎片通过将具有高数值孔径的激光束传递到高NA区域,并将具有低数值孔径的激光束传递到低NA区域来实现。 这可能导致镜片细胞核的更有效的分裂,而不会将视网膜暴露于高于安全标准的辐射。

    Varying a numerical aperture of a laser during lens fragmentation in cataract surgery
    19.
    发明授权
    Varying a numerical aperture of a laser during lens fragmentation in cataract surgery 有权
    在白内障手术期间,在晶状体碎裂期间改变激光的数值孔径

    公开(公告)号:US09393156B2

    公开(公告)日:2016-07-19

    申请号:US14193740

    申请日:2014-02-28

    Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

    Abstract translation: 这里公开的一些实施例提供了使用超短脉冲激光来分割病人眼睛的白内障透镜的方法。 该方法可以包括在患者眼睛的镜片内确定高NA区域,其中具有高数值孔径的激光束的锥角不被虹膜遮蔽,以及径向更靠近虹膜的低NA区域,其中 具有低数值孔径的激光束的锥角不被虹膜遮蔽。 激光透镜碎片通过将具有高数值孔径的激光束传递到高NA区域,并将具有低数值孔径的激光束传递到低NA区域来实现。 这可能导致镜片细胞核的更有效的分裂,而不会将视网膜暴露于高于安全标准的辐射。

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