A validation study on the accuracy and precision of gaze and vergence using stereoscopic eye-tracking technology.

ABSTRACT: Binocular video-based eye-tracking allows for gaze and vergence measurements, but the accuracy and precision of vergence are barely addressed. Here, we investigate the accuracy and precision of both gaze and vergence measurements using a stereoscopic eye-tracking system. Previous studies have evaluated stereoscopic eye-trackers for gaze eccentricities up to 16°. We validated a custom-built stereoscopic eye-tracker with two cameras and two infrared light sources for gaze eccentricities up to 21°. Additionally, we studied the impact of fixation distance and pupil size on vergence accuracy. Participants with normal binocular vision (N = 8) performed fixation tasks, enabling the assessment of both gaze and vergence errors. The stereoscopic system provided gaze estimates with a mean absolute er

SUBMITTER: Pijpaert AR 

PROVIDER: S-EPMC12213999 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature