APPARATUS FOR EXAMINING GAZE SHIFT IN DEPTH DIRECTION

摘要

In an apparatus for examining gaze shift in depthdirection, light emitting diodes B and E, or D and C arelit at a plurality of positions with different distance indepth direction from the subject, and eye movement of thesubject at that time is detected by an eye movementdetecting portion (2). The signal of detection isprocessed in a signal processing circuit (5) and isapplied to a calculating portion (1). The calculatingportion (1) determines whether or not there is a disorderin gaze shift in depth direction of the subject by usingany or all of latency in eye movement, time constant,amplitude, change in convergence angle, number ofoccurrence of saccade, and asymmetry of left and right eyemovements, in response to the detected output of the eyemovement.