Detecting the onset of eye fatigue in a live framework

This document describes a method for detecting the onset of eye fatigue and how it could be implemented in an existing live framework. The proposed method, which uses fixation data, does not rely as heavily on the sampling rate of the eye tracker as do methods which use saccade data, making it more suitable for lower cost eye trackers such as mobile and wearable devices. By being able to detect eye fatigue with such eye trackers, it becomes possible to react to the development of fatigue in virtually any environment, such as by alerting drivers that they appear fatigued and may want to pull over. It could also be used to aid in developing interfaces that are more user-friendly by noting at which point a user becomes fatigued while navigating the interface.