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The Eye-gaze Response Interface Computer Aid (ERICA) is a computer system developed at the University of Virginia that tracks eye movement. To allow true integration into the Windows environment, an effective methodology for performing the full range of mouse actions and for typing with the eye needed to be constructed. With the methods described in this paper, individuals can reliably perform all actions of the mouse and the keyboard with their eye.
Chris Lankford (Sat,) studied this question.