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    SYSTEM AND METHOD FOR OPHTHALMIC SURFACE MEASUREMENTS BASED ON SEQUENTIAL ESTIMATES
    91.
    发明申请
    SYSTEM AND METHOD FOR OPHTHALMIC SURFACE MEASUREMENTS BASED ON SEQUENTIAL ESTIMATES 审中-公开
    基于序列估计的眼表面测量系统与方法

    公开(公告)号：US20130138094A1

    公开(公告)日：2013-05-30

    申请号：US13690979

    申请日：2012-11-30

    Applicant: AMO Development, LLC

    Inventor： Anatoly Fabrikant

    IPC: A61B3/107 ,  A61F9/008

    CPC classification number: A61B3/107 ,  A61B5/725 ,  A61F9/00804 ,  A61F9/00806 ,  A61F2009/00872 ,  A61F2009/0088 ,  A61F2009/00882 ,  F04C2270/041

    Abstract: Systems and methods for measuring a topography of an optical tissue surface of an eye are provided by combining measured elevations of the surface with a priori information of the surface to provide an estimate of mean and covariance of post-measurement orthogonal polynomial sequence amplitudes associated with the surface, determining a variance of elevation of the surface from the estimate, and constructing the topography from the estimate of mean and covariance of post-measurement amplitudes based on a comparison of the variance of elevation of the surface with a pre-determined threshold. The a priori information includes an estimate of mean and covariance of pre-measurement orthogonal polynomial sequence amplitudes associated with the surface.

    Abstract translation: 通过将表面的测量高程与表面的先验信息组合来提供用于测量眼睛的光学组织表面的形貌的系统和方法，以提供与该表面相关联的测量后正交多项式序列振幅的平均和协方差的估计 根据估计的平均和协方差的估计，基于表面高程的方差与预定阈值的比较来确定表面高程的方差与估计的平均和协方差的构造。 先验信息包括与表面相关联的预测量正交多项式序列振幅的平均值和协方差的估计。

    CORNEAL LENTICULAR INCISION USING A FEMTOSECOND LASER WITH OPTIMIZED PULSE ENERGY AND SCAN LINE STEPS
    93.
    发明申请
    CORNEAL LENTICULAR INCISION USING A FEMTOSECOND LASER WITH OPTIMIZED PULSE ENERGY AND SCAN LINE STEPS 有权

    公开(公告)号：US20250073080A1

    公开(公告)日：2025-03-06

    申请号：US18951058

    申请日：2024-11-18

    Applicant: AMO Development, LLC

    Inventor： Nima Khatibzadeh ,  Li Bing ,  Hong Fu

    IPC: A61F9/008 ,  A61B18/20

    Abstract: An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed tangential to a parallel of latitude of the surface of the lenticule and then then moved in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, with the orientation of the scan line rotated between successive sweeps. To generate tissue bridge free incisions without leaving laser-induced marks in the eye, a laser pulse energy between 40 nJ to 70 nJ is used, and the sweeping speed is controlled such that the scan line step (the distance between the centers of consecutive scan lines) is between 1.7 μm and 2.3 μm.

    Detection of optical surface of patient interface for ophthalmic laser applications using a non-confocal configuration
    95.
    发明授权
    Detection of optical surface of patient interface for ophthalmic laser applications using a non-confocal configuration 有权

    公开(公告)号：US12216272B2

    公开(公告)日：2025-02-04

    申请号：US18487027

    申请日：2023-10-13

    Applicant: AMO Development, LLC

    Inventor： Mohammad Saidur Rahaman ,  Hong Fu ,  Roger W. Accurso ,  Zenon Witowski

    IPC: G02B26/08 ,  A61B3/13 ,  A61F9/008 ,  G01J1/42 ,  G02B27/10

    Abstract: An ophthalmic laser system uses a non-confocal configuration to determine a laser beam focus position relative to the patient interface (PI) surface. The system includes a light intensity detector with no confocal lens or pinhole between the detector and the objective lens. When the objective focuses the light to a target focus point inside the PI lens at a particular offset from its distal surface, the light signal at the detector peaks. The offset value is determined by fixed system parameters, and can also be empirically determined by directly measuring the PI lens surface by observing the effect of plasma formation at the glass surface. During ophthalmic procedures, the laser focus is first scanned insider the PI lens, and the target focus point location is determined from the peak of the detector signal. The known offset value is then added to obtain the location of the PI lens surface.

    CALIBRATION PROCESS FOR FEMTOSECOND LASER INTRAOCULAR LENS MODIFICATION SYSTEM USING VIDEO AND OCT TARGETING
    96.
    发明申请
    CALIBRATION PROCESS FOR FEMTOSECOND LASER INTRAOCULAR LENS MODIFICATION SYSTEM USING VIDEO AND OCT TARGETING 有权

    公开(公告)号：US20250009558A1

    公开(公告)日：2025-01-09

    申请号：US18772786

    申请日：2024-07-15

    Applicant: AMO Development, LLC

    Inventor： Alexander Vankov ,  Jenny Wang ,  David A. Dewey ,  Phillip Gooding ,  Richard Hofer ,  Georg Schuele

    IPC: A61F9/008 ,  G02B26/10

    Abstract: The XYZ beam position of an ophthalmic laser system is calibrated by measuring a fluorescent signal induced by the focused laser beam in a thin glass coverslip via multiphoton absorption. A video camera measures the XY position and intensity of the fluorescent signal as the focused laser beam strikes the coverslip. The Z position of the focus is determined by scanning the targeted z position and identifying the Z scanner position of peak fluorescence. An OCT system measures the real space Z location of the coverslip, which is correlated with the Z scanner position. Other laser system parameters are assessed by repeatedly scanning a lower energy laser beam in a piece of IOL material, and observing damage (scattering voids) formation in the IOL material. Based on the rate of damage formation, laser system parameters such as beam quality, numerical aperture, pulse energy, and pulse duration, etc. can be assessed.

    Ophthalmic laser surgical method and system for forming corneal lenticule with side tab for easy extraction
    100.
    发明授权
    Ophthalmic laser surgical method and system for forming corneal lenticule with side tab for easy extraction 有权

    公开(公告)号：US12097148B2

    公开(公告)日：2024-09-24

    申请号：US17446442

    申请日：2021-08-30

    Applicant: AMO Development, LLC

    Inventor： Jose L. Garcia ,  Griffith E. Altmann

    IPC: A61F9/008 ,  A61B18/00

    CPC classification number: A61F9/00827 ,  A61B2018/00601 ,  A61F2009/00872 ,  A61F2009/00897

    Abstract: In an ophthalmic laser procedure, a lenticule is formed in the cornea and extracted from the cornea to accomplish vision correction. The ophthalmic laser system is used to form top and bottom lenticule incisions which intersect each other to form an isolated volume of corneal tissue in between. The volume of tissue includes a lenticular portion having a circular or oval shape and a side tab that protrudes from the peripheral of the lenticular portion. The side tab has a radial dimension between 0.5 and 5 mm and a width between 0.5 and 3 mm in. An entry cut is further formed from the anterior corneal surface to the top or bottom lenticule incisions to provide access to the lenticule. During extraction, the surgeon uses the surgical tool to grab the side tab to extract the lenticule.

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