Patent ID: 7341348
Filing Date: 2008-03-11
Classification: A61B

Abstract:
1. A device for measuring a wavefront aberration of an ocular system, comprising: an aberration measurement light source suitable to illuminate a retinal surface of the ocular system; an optical relay system for directing the measurement light source illumination scattered from the retinal surface of the ocular system to a deflectometer component, wherein said deflectometer component adapts a wavefront from the optical system into a Moiré fringe pattern; a sensor/camera assembly adapted to image and display an exit pupil of the ocular system and the Moiré fringe pattern; an illumination source for illuminating the exit pupil of the optical system cooperating with the sensor/camera assembly for imaging and displaying the exit pupil and the Moiré fringe pattern; an alignment system cooperating with the illumination source in such a manner to consistently align a selected measurement axis of the device to the ocular system; and a fringe pattern analyzer adapted to calculate the wavefront aberration of the ocular system.