专利检索 ap:("Paul Hahn" OR "John Reynolds" OR "Alan Tomlinson" OR "Robert J. O'Meara" OR "Martin Drazba") AND inv:"Alan Tomlinson" 第 1 页

1.

发明授权
Method for measuring the rotation of an assymetric contact lens and lenses for practicing the method 失效
标题翻译：用于测量不对称隐形眼镜的旋转和实施该方法的镜片的方法

公开(公告)号：US4976533A

公开(公告)日：1990-12-11

申请号：US203381

申请日：1988-06-07

申请人： Paul Hahn , John Reynolds , Alan Tomlinson , Robert J. O'Meara , Martin Drazba

发明人： Paul Hahn , John Reynolds , Alan Tomlinson , Robert J. O'Meara , Martin Drazba

IPC分类号： A61B3/10 , A61B3/12 , G02C7/04

CPC分类号： G02C7/04 , G02C7/048

摘要： A contact lens comprising a corneal section, a vertical axis, and a shape adapted to maintain the lens at an intended orientation. The improvement comprises either a visible horizontal line segment located in the corneal section perpendicular to the vertical axis and/or three visible radial line segments in the corneal section, the first of the line segments located on the vertical axis, and the second and third segments located on either side of the first segment such that the extension of the segments would pass through a geometric center of the corneal section forming two 20.degree. angles. The lens is useful for measuring the rotation of an assymetric lens. Methods for measuring lens rotation using the invention lenses are also disclosed.