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    • 104. 发明公开
    • Presbyopia correction program
    • Programme zur Korrektur von Presbyopie
    • EP1754460A1
    • 2007-02-21
    • EP05018062.9
    • 2005-08-19
    • WaveLight Laser Technologie AG
    • Seiler, Theo, Prof. Dr.Koller, Tobias, Dr.
    • A61F9/01G02C7/04G02C7/06
    • A61F9/008A61F9/00808A61F9/00812A61F2009/00846A61F2009/00872A61F2009/00895G02C7/027
    • A method of generating a computer program for control of an apparatus for photorefractive treatment of presbyopia by ablation of corneal tissue or a contact lens, comprising the following steps:
      (a) electing an eye model,
      (b) measuring the pupil diameter of the patient at far distance mesopically and at short distance photopically,
      (c) selecting wanted short and far distances regarding optimum sight,
      (d) calculating a global optimum regarding curvature (1/R) and asphericity (Q) of the cornea on the basis of the results obtained in steps (a) (b) and (c) by means of optical ray tracing and minimal spot diameter at the retina, and
      (e) deriving the computer program in accordance with the results of step (d).
      Alternatively step (d) includes determining a central steep island with a diameter in the range of 2 to 4 millimeters at the cornea and calculating a curvature and asphericity in the rest of the cornea.
    • 一种生成计算机程序的方法,用于通过角膜组织或隐形眼镜的消融来控制用于光老化眼屈光治疗的装置,包括以下步骤:(a)选择眼模型,(b)测量患者的瞳孔直径 (c)选择有关最佳视力的短距离和远距离,(d)根据角度计算角膜的曲率(1 / R)和非球面度(Q)的全局最优值 在步骤(a)(b)和(c)中通过光线跟踪和视网膜处的最小斑点直径获得的结果,以及(e)根据步骤(d)的结果导出计算机程序。 或者,步骤(d)包括在角膜处确定直径在2至4毫米范围内的中心陡峭的岛,并计算其余角膜的曲率和非球面度。
    • 107. 发明公开
    • System for laser treatment of presbyopia
    • 眼科检查系统
    • EP1645222A1
    • 2006-04-12
    • EP05027736.7
    • 1999-03-03
    • Visx, Incorporated
    • Odrich, MarcGreenberg, KennethLegerton, JerryMunnerlyn, Charles R.Shimmick, John K.
    • A61B3/10A61F9/00A61N5/06
    • A61F9/00802A61F9/008A61F9/00806A61F9/00808A61F9/00817A61F2009/00844A61F2009/00872A61F2009/0088A61F2009/00882A61F2009/00895
    • This invention is an ophthalmic surgery system, and method for treating presbyopia by performing ablative photodecomposition of the corneal surface (200). The offset image of a variable aperture, such as a variable width slit, and variable diameter iris diaphragm, is scanned in a preselected pattern to perform ablative sculpting of predetermined portions of a corneal surface. The scanning is performed to ablate an optical zone sized to match the patient pupil with a peripheral transition zone (216) outside the pupil. The shape of the ablated optical zone is different from the shape of the final optical correction on the anterior surface of the cornea. The optical zone (211) corrects for near vision centrally, and far vision peripherally. A movable image displacement mechanism enables radial displacement, and angular rotation of the profiled beam exiting from the variable aperture. The invention enables wide area treatment with a laser having a narrower beam than the treatment area, and can be used in the treatment of many conditions in conjunction with presbyopia such as hyperopia, hyperopic astigmatism and irregular refractive aberrations.
    • 本发明是一种眼科手术系统,以及通过进行角膜表面(200)的烧蚀光分解来治疗老花眼的方法。 可变孔径的偏移图像,例如可变宽度狭缝和可变直径虹膜光阑,以预选图案扫描,以进行角膜表面的预定部分的烧蚀造型。 执行扫描以消融尺寸适于使患者瞳孔与瞳孔外部的周边过渡区域(216)匹配的光学区域。 消融的光学区域的形状与角膜前表面上的最终光学校正的形状不同。 光学区域(211)可以集中纠正近距离视觉,并可以在外围进行远视。 可移动图像位移机构使得能够从可变孔径出射的成像光束的径向位移和角旋转。 本发明能够利用具有比治疗区域更窄的光束的激光进行广泛的治疗,并且可以用于治疗与远视如远视,远视像散和不规则屈光像差等许多情况。
    • 110. 发明公开
    • Multifocal corneal sculpturing mask
    • Multifokale Hornhautumformungsmaske
    • EP1138289A1
    • 2001-10-04
    • EP00302633.3
    • 2000-03-29
    • Nielson, James M. Dr.
    • Nielson, James M. Dr.
    • A61F9/01
    • A61F9/008A61F2009/00872A61F2009/00895
    • There is disclosed herein a method and system for corneal sculpting to create a multifocal refractive surface on the cornea of the eye. The refractive surface may comprise a central area and successive rings exposed outwardly toward the periphery and are of varying dioptric powers which may begin with the highest dioptric power in the center and decreasing powers of varying diopters progressing toward the periphery or vice-versa or alternating patterns of dioptric power, i.e., near/far, far/near or any combination. Furthermore, the multiple zones may be asymmetric, dicentric, ovoid, or the like. Suitable masks, barriers and iris diaphragms are described for facilitating sculpting of the different surfaces to achieve the desired multifocal refractive surfaces.
    • 本文公开了一种用于角膜雕刻以在眼睛的角膜上产生多焦点折射表面的方法和系统。 折射表面可以包括中心区域和连续环向外暴露于周边并且具有变化的度数,其可以从中心的最高度数开始,并且朝向周边或反之亦然或交替模式进行变化的屈光度的功率的减小 屈光度,即近/远,远/近或任何组合。 此外,多个区域可以是不对称的,双重的,卵形的等等。 描述了合适的掩模,障碍物和虹膜光阑,以便于不同表面的雕刻以实现期望的多焦点折射表面。