Methods and systems for adapting a display screen output based on a display user's attention. Gaze direction tracking is employed to determine a sub-region of a display screen area to which a user is attending. Display of the attended sub-region is modified relative to the remainder of the display screen, for example, by changing the quantity of data representing an object displayed within the attended sub-region relative to an object displayed in an unattended sub-region of the display screen.
