METHOD AND APPARATUS FOR MEASURING A CORNEAL PROFILE OF AN EYE

摘要

One or more embodiments of the present invention provide a method and apparatus to determine a corneal thickness profile of an eye. In particular, one embodiment of the present invention is a corneal diagnostic instrument including: (a) a Placido ring illuminator disposed to project a Placido ring image onto a cornea to generate a reflected Placido ring image; (b ) multiple slit lamp projectors disposed to project slit light beams onto the cornea to generate slit light beam images; (c) a camera system optically disposed to detect the reflected Placido ring image SIMILAR d the slit light beam images; and (d) a controller, coupled to the slit lamp projectors, the Placido ring illuminator, and the camera 10 system, to cause the slit light beam images and the reflected Placido ring image to be generated and detected in a predetermined sequence, wherein the controller is responsive to the detected reflected Placido ring image and the detected slit light beam images to determine a corneal thickness profile.