| 摘要 |
The invention is a system and method for measuring the shape of a surface. One specific design comprises a corneal topographer which consists of a transparent rigid reference member (2) having a reference surface of a predetermined shape applied to the surface of an eye (12), a light source (3) for irradiating the reference surface and a detection system (5, 7) for detecting light propagating from the reference member to determine information regarding the shape of the corneal surface. Several specific designs are shown that use optical, acoustic, acousto-optic or capacitive techniques to determine a multiplicity of data points, sufficient in number of spacing, to represent information regarding the local topography of the surface of the eye. |
