Cyclopean vs. Dominant Eye in Gaze-Interface-Tracking

Keywords: eye movement, gaze input, interactive eye-tracking, smooth pursuit, usability, cyclopean eye, dominant eye, human-computer interaction


User-centered design questions in gaze interfaces have been explored in multitude empirical investigations. Interestingly, the question of what eye should be the input device has never been studied. We compared tracking accuracy between the “cyclopean” (i.e., midpoint between eyes) dominant and non-dominant eye. In two experiments, participants performed tracking tasks. In Experiment 1, participants did not use a crosshair. Results showed that mean distance from target was smaller with cyclopean than with dominant or non-dominant eyes. In Experiment 2 participants controlled a crosshair with their cyclopean, dominant and non-dominant eye intermittently and had to align the crosshair with the target. Overall tracking accuracy was highest with cyclopean eye, yet similar between cyclopean and dominant eye in the second half of the experiment. From a theoretical viewpoint, our findings correspond with the cyclopean eye theory of egocentric direction and lend support to the hemispheric laterality approach of eye dominance. From a practical viewpoint, we show that what eye to use as input should be a design consideration in gaze interfaces.

Author Biographies

Tomer Elbaum, Ariel University
Department of Industrial Engineering and Management, Adjunct
Michael Wagner, Ariel University

Department of Industrial Engineering and Management, Ph.D.

Senior Lecturer

Assaf Botzer, Ariel University

Department of Industrial Engineering and Management, Ph.D.


How to Cite
Elbaum, T., Wagner, M., & Botzer, A. (2017). Cyclopean vs. Dominant Eye in Gaze-Interface-Tracking. Journal of Eye Movement Research, 10(1).