Eye tracking in VR (or gaze tracking) is a technology for measuring the gaze direction of a user. When combined with positional head tracking, one can determine the exact point the user is looking at in the real or virtual world. Apart from detecting the point of interest, the system provides information about fixations (whether a user is focusing on something), saccades, and other eye motion patterns such as blinking and pupil dilation.

Eye tracking also enables the use of foveated rendering where the area with the highest image resolution follows your gaze so that you can always experience the best possible image quality.