1. An autostereoscopic display system comprising: a display means for displaying images to be viewed by a viewer; a tracking tower located on either side of the display means, each tracking tower including: an upper and lower illumination means for illuminating at least the eyes of a viewer; a vertically mounted camera for capturing at least the reflected light from the eyes of the viewer; a camera mounted perpendicular to the horizontal for capturing at lest the reflected light from the eyes of the view; and a mirror positioned to enable the vertically mounted camera to capture images of the viewer in front of the tracking tower; a processing means for receiving the images captured by each camera, determining the position of the viewer's eyes, and sending the output from the processing means to each tracking tower to thereby adjust each said camera in response to movement of the viewer; and wherein the output from the processing means is utilized to display respective left and right eye images of the image to be viewed by the viewer on the display means.