“Tracking the Gaze”
▻http://blog.art21.org/2013/01/07/tracking-the-gaze
#eyetracking (old style)
see also Yarbus, Alfred. Eye Movements and Vision. Plenum Press, New York, 1967, ▻http://wexler.free.fr/library/files/yarbus%20(1967)%20eye%20movements%20and%20vision.pdf