| 摘要 |
<p>This invention provides a method and apparatus for mapping the surface of an object, in particular, a transparent object such as anterior and posterior surfaces of a patient's cornea, in a clinically useful time using a single optical system. In a preferred embodiment, a pattern generator (12) projects a pattern of light and dark areas onto a patient's cornea (18), and a light detector (14) receives patterns reflected from the anterior and posterior surfaces (24, 28) of the cornea. A mapping means (16) generates a three-dimensional map of the anterior and posterior corneal surfaces (24, 28) from information regarding the projected and detected light patterns. The invention can be used to map other objects such as a contact lens or an intraocular device, e.g., an intrastromal ring. The invention can also be used to map the surface of an opaque object.</p> |
