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11. 发明申请

WO02056791A3 KERATOMETRIC TO APICAL RADIUS CONVERSION 审中-公开
标题翻译：几何到Apical半径转换
公开(公告)号：WO02056791A3
公开(公告)日：2002-10-17
申请号：PCT/US0201274
申请日：2002-01-18
申请人： LASERSIGHT TECH INC
发明人： HOLLADAY JACK
IPC分类号： A61B3/107 , A61B19/00 , A61F9/01 , G09B23/28 , A61B18/18
CPC分类号： G09B23/28 , A61B3/107 , A61B34/10 , A61F9/00804 , A61F2009/00872 , A61F2009/00882
摘要： The present invention provides apparatus (300) and techniques for performing prolate shaped corneal reshaping using an ellipsoid corneal modeler (310). In accordance with the principles of the present invention, an ellipsoid corneal modeler (130) is implemented with the well behaved conicoid, combined with a modeled surface which can be used for astigmatic treatments. An ellipsoid corneal modeler includes an ellipsoid fitter which utilizs two radii of curvature, asphericity (Q), and a surface rotation about the pupil center. Moreover, a conversion is provided to convert between measurements obtained by a keratometer, and apical radii. In a further embodiment provided by the present invention, conversion is made possible between radii measurements obtained clinically (e.g., using a keratometer) and radii measurements at the apex, i.e., keratometric to apical radius conversion.
摘要翻译：本发明提供了用于使用椭球角膜建模器（310）来执行长形成形角膜整形的设备（300）和技术。根据本发明的原理，椭圆体角膜建模器（130）被实施为具有良好性能的二次曲面，与可用于散光治疗的模型化表面结合。椭圆体角膜建模器包括利用两个曲率半径，非球面性（Q）和围绕瞳孔中心的表面旋转的椭球体拟合器。此外，提供转换以在角膜曲率计获得的测量结果与顶点半径之间进行转换。在本发明提供的另一个实施例中，在临床上（例如使用角膜曲率计）获得的半径测量结果和在顶点处的半径测量结果（即角膜测量法到顶点半径转换）之间可以进行转换。

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