SR Research EyeLink

The EyeLink II system consists of three miniature cameras mounted on a padded headband. Two eye cameras allow binocular eye tracking or selection of the subject’s dominant eye. An optical head-tracking camera integrated into the headband allows accurate tracking of the subject’s point of gaze without the need for a bite bar.

Specifications

	EyeLink II
500 Hz binocular eye monitoring
0.5º average accuracy
Access eye position data with 3.0 msec delay
0.01º RMS resolution
High quality computer based or scene camera eye tracking
Fast and simple participant setup, calibration, and validation

Tobii Eye Tracking

Tobii T60/T120

The Tobii T60 and T120 Eye Trackers are integrated into a 17" TFT monitor. They are ideal for all forms of eye tracking studies using screen based stimuli.

Specifications

	Tobii T60 Eye Tracker	Tobii T120 Eye Tracker¹
Accuracy (degrees)	0.5	0.5
Drift (degrees)	< 0.3	< 0.3
Freedom of Head Movement (cm)	44 * 22 * 30	30 * 22 * 30
Data Rate (Hz)	60	120
Binocular Tracking	Yes	Yes
Display Size (inch)	17	17
Display Resolution (px)	1280 * 1024	1280 * 1024
Bright/Dark Pupil Tracking	Both - automatic optimization	Both - automatic optimization
Eye Tracking Server	Embedded	Embedded
User Camera	Built-in	Built-in
Audio	Built-in Speakers	Built-in Speakers