Guiding visual attention to specific parts of an interface is essential. One powerful tool for guiding attention is gaze cues, that direct visual attention in the same direction as a presented gaze. In this paper, we explored how to direct users' visual attention on 2D screens using gaze cues from avatars and humans. For this, we conducted a lab experiment (N = 30) based on three independent variables: (1) stimulus shown either as avatars or human faces, (2) target direction with a target appearing left or right from a stimulus, and (3) gaze validity indicating whether a stimulus' gaze was directed towards a target (valid gaze) or not (invalid gaze). Our results show that participants' total and average fixation on a target lasted longer in the presence of the human image than the avatar stimulus when a target appeared on the right side and when a stimulus' gaze was towards the target. Moreover, participants' average fixation was longer on the human than avatar stimulus gazing in the opposite direction from a target than towards it.