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公开(公告)号：US5835192A
公开(公告)日：1998-11-10
申请号：US576289
申请日：1995-12-21
CPC分类号： G02C7/044 , G02C7/027 , G02C7/042 , G02C2202/08
摘要： A design family of contact lenses includes a central area utilized for distance vision, surrounded by multiple alternating annuli of near and distance optical powers, surrounded by a peripheral distance zone. The design can also be used in intraocular lenses (IOL). The distance optical power is constant across the design family of lenses, but the near optical power increases as a subject's presbyopia increases. The design family of contact lenses can be fitted to a patient in a standard fashion by fitting both eyes to the best distance visual acuity (VA), and obtaining near acuity from the near annuli. A modified monovision method fits the patient's dominant eye with a contact lens as described having the full prescription distance power and fitting the nondominant eye with a contact lens as described having a distance optical power between the full prescription distance optical power and the near optical power. Specifically, the nondominant eye is fitted with a contact lens as described but having a distance power between 50% and 100% of the range between the prescription near and distance optical powers, biased towards the distance optical power.
摘要翻译： 隐形眼镜的设计系列包括用于远距离视觉的中心区域，被围绕由周边距离区域包围的近距离和远距离光功率的多个交替的环形环绕。 该设计也可用于眼内透镜（IOL）。 透镜设计系列的距离光功率是恒定的，但随着受试者的老视眼增加，近光功率增加。 隐形眼镜的设计系列可以通过将两只眼睛适配到最佳距离视力（VA），并从近环获得近视力，以标准方式安装到患者身上。 改进的单视方法适合患者的主眼，所述隐形眼镜具有如所述具有完全处方距离力的隐形眼镜，并且使非隐性眼睛与如在所述处方距离光功率和近光功率之间具有距离光焦度所述的隐形眼镜相适配。 具体而言，非优势眼配备有如所述的隐形眼镜，但距离光学功率偏置在处方近距离和距离光焦度之间的距离的50％至100％之间。
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公开(公告)号：US5650838A
公开(公告)日：1997-07-22
申请号：US433739
申请日：1995-05-04
IPC分类号： G02C7/02 , G02C7/04 , G05B19/4097
摘要： Programmable smooth junctions are provided for lenses and molds therefor, particularly for toric lens designs, which enable a numerically controlled (NC) machine to be programmed to machine smooth junctions or transitions between adjacent regions of a lens which have different thicknesses or radii of curvature. First and second mathematical functions f(a) and f(b) are defined which specify the curves of first and second segments of a lens surface. The slope dy/dx is derived of the first and second mathematical functions f(a) and f(b) at the transition between the first and second segments of the lens surface. A mathematical function is defined which describes a desired transition between the first and second segments of the lens. The first and second mathematical functions f(a) and f(b), the derived slopes dy/dx of the first and second mathematical functions f(a) and f(b), and the mathematical function describing the desired transition are then utilized to program a numerically controlled machine to machine the first and second segments of the lens surface and the desired transition between the first and second segments.
摘要翻译： 提供可编程的光滑接头用于其透镜和模具，特别是对于复曲面透镜设计，其使数字控制（NC）机器能够被编程为加工具有不同厚度或曲率半径的透镜的相邻区域之间的光滑接合或过渡。 定义了第一和第二数学函数f（a）和f（b），其规定了透镜表面的第一和第二段的曲线。 斜率dy / dx由透镜表面的第一和第二段之间的过渡处的第一和第二数学函数f（a）和f（b）导出。 定义了描述透镜的第一和第二段之间期望的转变的数学函数。 第一和第二数学函数f（a）和f（b），第一和第二数学函数f（a）和f（b）的导出斜率dy / dx以及描述所需转变的数学函数 对数控机床进行编程，以加工透镜表面的第一和第二段以及第一和第二段之间的期望过渡。
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公开(公告)号：US5650837A
公开(公告)日：1997-07-22
申请号：US433740
申请日：1995-05-04
摘要： Non-ballasted, eyelid rotationally stabilized designs are disclosed for use in toric or multifocal toric contact lenses. The back surface of the lens includes a toric or multifocal toric surface and also thin top and bottom zones (slab offs) to achieve eyelid rotational orientation and stabilization. The advantage of this technical approach is in mold manufacturing, wherein the design allows the use of any chosen power spherical stock front mold.
摘要翻译： 公开了用于复曲面或多焦点复曲面隐形眼镜的非镇流，眼睑旋转稳定设计。 透镜的后表面包括复曲面或多焦点复曲面，并且还具有薄的顶部和底部区域（平板），以实现眼睑旋转取向和稳定。 这种技术方法的优点是在模具制造中，其中设计允许使用任何选定的功率球形原型前模。
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公开(公告)号：US5805260A
公开(公告)日：1998-09-08
申请号：US712954
申请日：1996-09-12
摘要： Combined multifocal toric lens designs are disclosed which combine a correction for astigmatism, either corneal or lenticular, with a correction for presbyopia. One of the front and back surfaces of the lens defines a toric surface for an astigmatic optical correction, and one of the front and back surfaces, which can be the same surface or the opposite surface, defines a multifocal surface for a presbyopic optical correction, to provide visual acuity for astigmatic presbyopes. Embodiments are disclosed wherein one surface of the lens design has a combined concentric annular ring, multifocal toric surface, and the other surface of the lens design has a spherical or aspherical surface. In other embodiments, one surface of the lens design has a toric surface for a toric correction, and the other surface of the lens design has a multifocal surface to provide a presbyopic correction, which may include concentric annular ring multifocal lens designs, or other presbyopic lens designs which contain more than one spherical or aspherical power such as aspheres, segments, progressive aspheres, diffractive, birefringent or other concentrics.
摘要翻译： 公开了组合的多焦点复曲面透镜设计，其将用于角膜或透镜的散光校正与校正老视相结合。 透镜的前表面和后表面中的一个限定了用于散光光学校正的复曲面，并且可以是相同表面或相对表面的前表面和后表面中的一个限定了用于远视光学校正的多焦点表面， 为散光老花眼提供视力。 公开了实施例，其中透镜设计的一个表面具有组合的同心圆环，多焦点复曲面，并且透镜设计的另一个表面具有球面或非球面。 在其他实施例中，透镜设计的一个表面具有用于复曲面校正的复曲面，并且透镜设计的另一表面具有多焦面，以提供老花眼校正，其可以包括同心圆环多焦点透镜设计或其它老花眼 包含多于一个球形或非球面光焦度的透镜设计，例如非球面，段，渐进非球面，衍射，双折射或其他浓度。
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