Colour vision deficiencies are common, yet screening for them still often depends on dedicated tests or clinical settings. In this ETRA 2023 case study, we explore whether affordable webcam-based eye-tracking could offer a low-cost path to detecting them.

Specialized eye-tracking hardware is accurate but expensive and rarely available outside labs. Webcams, by contrast, are nearly ubiquitous, so if gaze signals captured through an ordinary camera carry enough information to flag colour vision deficiencies, screening could become far more accessible.

Our study examines how people’s gaze behavior differs when viewing colour-dependent stimuli, and whether those differences can be picked up through webcam-based tracking. As a case study, the emphasis is on probing feasibility rather than claiming a finished diagnostic tool.

If the signal holds up, this line of work points toward inexpensive, widely deployable accessibility screening. This was joint work with A. Bruno, M. Tliba, A. Chetouani, C.C. Giunta, and A. Çöltekin.

Presented at ETRA 2023; see my Publications page.

See the paper for the full methodology and results.