OPTICAL SURFACE IDENTIFICATION FOR LASER EYE SURGERY

    公开(公告)号:US20200038244A1

    公开(公告)日:2020-02-06

    申请号:US16601478

    申请日:2019-10-14

    Abstract: Systems and methods automatically locate optical surfaces of an eye and automatically generate surface models of the optical surfaces. A method includes OCT scanning of an eye. Returning portions of a sample beam are processed to locate a point on the optical surface and first locations on the optical surface within a first radial distance of the point. A first surface model of the optical surface is generated based on the location of the point and the first locations. Returning portions of the sample beam are processed so as to detect second locations on the optical surface beyond the first radial distance and within a second radial distance from the point. A second surface model of the optical surface is generated based on the location of the point on the optical surface and the first and second locations on the optical surface.

    CLOSED-LOOP LASER EYE SURGERY TREATMENT
    2.
    发明申请

    公开(公告)号:US20190336340A1

    公开(公告)日:2019-11-07

    申请号:US16457758

    申请日:2019-06-28

    Abstract: A laser eye surgery system includes a laser to generate a laser beam. A topography measurement system measures corneal topography. A processor is coupled to the laser and the topography measurement system, the processor embodying instructions to measure a first corneal topography of the eye. A first curvature of the cornea is determined. A target curvature of the cornea that treats the eye is determined. A first set of incisions and a set of partial incisions in the cornea smaller than the first set of incisions are determined. The set of partial incisions is incised on the cornea by the laser beam. A second corneal topography is measured. A second curvature of the cornea is determined. The second curvature is determined to differ from the target curvature and a second set of incisions are determined. The second set of incisions is incised on the cornea.

    Optical surface identification for laser eye surgery

    公开(公告)号:US10441464B2

    公开(公告)日:2019-10-15

    申请号:US15376491

    申请日:2016-12-12

    Abstract: Systems and methods automatically locate optical surfaces of an eye and automatically generate surface models of the optical surfaces. A method includes OCT scanning of an eye. Returning portions of a sample beam are processed to locate a point on the optical surface and first locations on the optical surface within a first radial distance of the point. A first surface model of the optical surface is generated based on the location of the point and the first locations. Returning portions of the sample beam are processed so as to detect second locations on the optical surface beyond the first radial distance and within a second radial distance from the point. A second surface model of the optical surface is generated based on the location of the point on the optical surface and the first and second locations on the optical surface.

    CONFOCAL LASER EYE SURGERY SYSTEM
    4.
    发明申请

    公开(公告)号:US20190076017A1

    公开(公告)日:2019-03-14

    申请号:US16188119

    申请日:2018-11-12

    Abstract: A laser surgery system includes a light source, an eye interface device, a scanning assembly, a confocal detection assembly and preferably a confocal bypass assembly. The light source generates an electromagnetic beam. The scanning assembly scans a focal point of the electromagnetic beam to different locations within the eye. An optical path propagates the electromagnetic beam from a light source to the focal point, and also propagates a portion of the electromagnetic beam reflected from the focal point location back along at least a portion of the optical path. The optical path includes an optical element associated with a confocal detection assembly that diverts a portion of the reflected electromagnetic radiation to a sensor. The sensor generates an intensity signal indicative of intensity the electromagnetic beam reflected from the focal point location. The confocal bypass assembly reversibly diverts the electromagnetic beam along a diversion optical path around the optical element.

    ADDITIVE MANUFACTURING INSIDE THE HUMAN EYE
    5.
    发明申请

    公开(公告)号:US20180221141A1

    公开(公告)日:2018-08-09

    申请号:US15890153

    申请日:2018-02-06

    Abstract: Additive manufacturing techniques are used to form an artificial intra-ocular lens (IOL) directly inside the human eye. Small openings are formed in the cornea and lens capsule of the eye, and the crystalline lens is broken up and removed through the openings; then, a material is injected into the lens capsule through the openings, and the focal spot of a pulse laser beam is scanned in a defined pattern in the lens capsule, to transform the material in the vicinity of the lase focal spot to form the IOL in a layer-by-layer manner. In one embodiment, stereolithography techniques are used where a pulse UV laser source is used to photosolidify a photopolymer resin. The liquefied resin is injected into the eye through the openings, after which only part of the resin, having the shape of the desired IOL, is selectively cured with the UV laser beam, via progressive layer formation.

    METHODS AND SYSTEMS FOR CORNEAL TOPOGRAPHY, BLINK DETECTION AND LASER EYE SURGERY
    6.
    发明申请
    METHODS AND SYSTEMS FOR CORNEAL TOPOGRAPHY, BLINK DETECTION AND LASER EYE SURGERY 有权
    方法和系统,用于角膜造影,烟雾探测和激光眼手术

    公开(公告)号:US20160093063A1

    公开(公告)日:2016-03-31

    申请号:US14866418

    申请日:2015-09-25

    Abstract: A method of blink detection in a laser eye surgical system includes providing a topography measurement structure having a geometric marker. The method includes bringing the topography measurement structure into a position proximal to an eye such that light traveling from the geometric marker is capable of reflecting off a refractive structure of the eye of the patient, and also detecting the light reflected from the structure of the eye for a predetermined time period while the topography measurement structure is at the proximal position. The method further includes converting the light reflected from the surface of the eye into image data and analyzing the image data to determine whether light reflected from the geometric marker is present is in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time.

    Abstract translation: 激光眼外科系统中的眨眼检测方法包括提供具有几何标记的形貌测量结构。 该方法包括使得地形测量结构进入靠近眼睛的位置,使得从几何标记传播的光能够反射出患者眼睛的折射结构,并且还检测从眼睛结构反射的光 当地形测量结构处于近侧位置时,预​​定时间段。 该方法还包括将从眼睛表面反射的光转换为图像数据并分析图像数据以确定反射光中是否存在从几何标记反射的光,其中如果几何标记被确定为不存在 患者被识别为在预定时间期间已经眨眼。

    INTRAOCULAR PRESSURE MEASUREMENT FOR AN EYE DOCKED TO A LASER SYSTEM

    公开(公告)号:US20200260954A1

    公开(公告)日:2020-08-20

    申请号:US16278035

    申请日:2019-02-15

    Abstract: A method for measuring the intraocular pressure (IOP) of an eye docked to an ophthalmic surgical laser system via a patient interface assembly. While the eye is docked to the laser system, and as the vertical force exerted on the eye by the patient interface fluctuates as the patient breaths and moves, the amount of corneal deformation is continuously measured by an optical coherence tomography device of the laser system and the force exerted on the eye is continuously measured by force sensors integrated in the patient interface assembly. Based on the real-time force signal and real-time corneal deformation signal, a controller calculates a linear relationship between force and corneal deformation, and determines the IOP of the docked eye by comparing a slope of the linear relationship against a pre-established slope vs. IOP calibration curve. The IOP of the docked eye can be used when setting laser treatment parameters.

    Closed-loop laser eye surgery treatment

    公开(公告)号:US10357399B2

    公开(公告)日:2019-07-23

    申请号:US14968783

    申请日:2015-12-14

    Abstract: A laser eye surgery system includes a laser to generate a laser beam. A topography measurement system measures corneal topography. A processor is coupled to the laser and the topography measurement system, the processor embodying instructions to measure a first corneal topography of the eye. A first curvature of the cornea is determined. A target curvature of the cornea that treats the eye is determined. A first set of incisions and a set of partial incisions in the cornea smaller than the first set of incisions are determined. The set of partial incisions is incised on the cornea by the laser beam. A second corneal topography is measured. A second curvature of the cornea is determined. The second curvature is determined to differ from the target curvature and a second set of incisions are determined. The second set of incisions is incised on the cornea.

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