Patent ID: 8777411
Filing Date: 2014-07-15
Classification: A61B

Abstract:
1. A fundus examination device capable of aiding in gaze fixation and image focusing, comprising: a light projecting device for projecting an examination light to illuminate an examinee's fundus of eye, the light projecting device consisting of a visible light emitter and an invisible light emitter, wherein the invisible light emitter is first used in an alignment procedure for focusing and gaze fixation, and the visible light emitter is then used in a photographing procedure for capturing the fundus image; an illuminating system for transmitting the examination light to the examinee's eye and receiving an image of the examinee's fundus; an imaging system connected with the illuminating system for showing the fundus image, the imaging system including a movable focusing lens; and a focusing and gaze-fixation device located in the illuminating system and including a focus mask formed within a focusing zone on which the examinee's eye focuses; the focus mask including a split image screen, a light-penetrable structure surrounding the split image screen, and at least one gaze fixation device; and the gaze fixation device each forming a gaze-fixation image at a focusing position within the focusing zone, such that the split image screen and the gaze-fixation image are located at different focal positions corresponding to the examinee's eye curvature; wherein the movable focusing lens and the split image screen cooperate with each other together to form a split image focusing means for selectively adjusting the focusing position to a position corresponding to the split image screen and the gaze-fixation image.