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公开(公告)号：US20070093891A1
公开(公告)日：2007-04-26
申请号：US11260013
申请日：2005-10-26
申请人： Juan Tabernero , Pablo Artal , Patricia Piers
发明人： Juan Tabernero , Pablo Artal , Patricia Piers
CPC分类号： A61B3/0025 , A61F2/1613
摘要： When fitting a patient for an intraocular lens, a series of measurements is taken on the patient's eye that determines a required lens power. Next, a range of preferred shape factors may be found, which determine the base (i.e., spherical) radii of the two lens surfaces, essentially independent of the lens power. The preferred shape factor adjusts the third-order coma of the lens to largely offset the coma of the cornea, so that the image at the retina has a reduced amount of third-order coma. Once a preferred shape factor is determined, the base radii of curvature of the anterior and posterior surfaces are determined from the shape factor and the lens power by algebraic formulas. Finally, one or more aspheric terms are added to one or both of the surfaces in the lens, so that the spherical aberration of the lens largely offsets the spherical aberration of the cornea.
摘要翻译： 当将患者安装在眼内透镜上时，对患者的眼睛进行一系列测量，以确定所需的镜片功率。 接下来，可以找到一系列优选的形状因子，其确定两个透镜表面的基本（即球面）半径，基本上与透镜功率无关。 优选的形状因子调整透镜的三阶彗差以大大抵消角膜的昏迷，使得视网膜上的图像具有减少的三次彗差。 一旦确定了优选的形状因子，则根据形状因子和透镜功率通过代数公式确定前表面和后表面的基本曲率半径。 最后，一个或多个非球面术语被添加到透镜中的一个或两个表面，使得透镜的球面像差大大抵消了角膜的球面像差。
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公开(公告)号：US08801781B2
公开(公告)日：2014-08-12
申请号：US11260013
申请日：2005-10-26
申请人： Juan Tabernero , Pablo Artal , Patricia Piers
发明人： Juan Tabernero , Pablo Artal , Patricia Piers
CPC分类号： A61B3/0025 , A61F2/1613
摘要： When fitting a patient for an intraocular lens, a series of measurements is taken on the patient's eye that determines a required lens power. Next, a range of preferred shape factors may be found, which determine the base (i.e., spherical) radii of the two lens surfaces, essentially independent of the lens power. The preferred shape factor adjusts the third-order coma of the lens to largely offset the coma of the cornea, so that the image at the retina has a reduced amount of third-order coma. Once a preferred shape factor is determined, the base radii of curvature of the anterior and posterior surfaces are determined from the shape factor and the lens power by algebraic formulas. Finally, one or more aspheric terms are added to one or both of the surfaces in the lens, so that the spherical aberration of the lens largely offsets the spherical aberration of the cornea.
摘要翻译： 当将患者安装在眼内透镜上时，对患者的眼睛进行一系列测量，以确定所需的镜片功率。 接下来，可以找到一系列优选的形状因子，其确定两个透镜表面的基本（即球面）半径，基本上与透镜功率无关。 优选的形状因子调整透镜的三阶彗差以大大抵消角膜的昏迷，使得视网膜上的图像具有减少的三次彗差。 一旦确定了优选的形状因子，则根据形状因子和透镜功率通过代数公式确定前表面和后表面的基本曲率半径。 最后，一个或多个非球面术语被添加到透镜中的一个或两个表面，使得透镜的球面像差大大抵消了角膜的球面像差。
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