OPTICAL INSTRUMENT ALIGNMENT SYSTEM

摘要

An ophthalmic apparatus for precisely positioning an optical instrument, such as a wavefront aberrometer, in three dimensions with respect to a patient's eye. The ophthalmic apparatus may include an optical instrument (122, 124, 126, 130, 132a, 132b, 134) directed in a first direction (139) toward a target area to receive light therefrom and a camera (146,148) directed in a second direction (150) toward the target area to reeceive light therefrom, the first and second directions being, non-parallel. The camera (146,148) may include imaging optics (146) to form an optical image on a photodetector array (148) using light reflected from the target area. The ophthalmic apparatus may also include a processor (136) configured to correlate a position of the optical image on the photodetector array with the distance between the optical instrument and the target area.