English
eyetracker
From eye + tracker.
Proto-Indo-European *h₃ekʷ- ‘eye’
Proto-Germanic *augô
Proto-West Germanic *augā
Old English ēage
Middle English e
English eye
Today it means
noun A device that tracks the movement of a subject's eyes when doing a specific task.
Language periods are conventional ranges, not dates for this word.
Etymograph / eyetracker