Tobii Pro Fusion screen based eye tracker maintains remarkable robustness during natural participant movement while providing research-grade eye tracking accuracy. When filtered, the system reaches about 0.3° gaze accuracy and 0.04° RMS precision under ideal circumstances. Because of these performance features, it is ideal for behavioral research that needs accurate measurements of pupillary responses, saccades, smooth pursuit, and fixation behavior.

Eye Tracking Accuracy

Under optimal conditions, Tobii Pro Fusion eye tracker delivers:

• Gaze accuracy: Approximately 0.3°

• Precision: 0.04° RMS (filtered)

These performance characteristics make the system suitable for measuring:

• Fixation behaviour

• Saccades

• Smooth pursuit

• Pupillary responses

Tobii's Patented 3D Eye Model

• Its performance is based on Tobii's patented 3D eye model, which continuously estimates eye position in three-dimensional space.

• The system also uses:

  • Two synchronized eye tracking cameras

• These cameras capture binocular eye images for robust gaze calculation.

Adaptive Illumination

The tracker automatically selects between:

• Bright-pupil illumination

• Dark-pupil illumination

depending on:

• Sampling frequency

• Environmental conditions

This improves tracking reliability across participants with:

• Varying eye characteristics

• Different lighting conditions

Dual-Camera Architecture

Compared to single-camera eye trackers, the dual-camera system offers noticeably improved head movement tolerance.

Tobii Pro Fusion eye tracker is particularly helpful for the following because it allows participants to move freely throughout studies without significantly impacting tracking quality:

• Developmental psychology

• Educational research

• Studies involving children

• Clinical populations

Fast Recovery

Tobii Pro Fusion provides:

• Immediate blink recovery

• Rapid gaze recovery

These capabilities further contribute to uninterrupted data collection.

Summary

In order to maintain dependable eye tracking quality during natural participant movement across a variety of behavioral and cognitive research applications, Tobii Pro Fusion combines roughly 0.3° gaze accuracy, 0.04° RMS filtered precision, Tobii's patented 3D eye model, two synchronized eye tracking cameras, automatic bright-pupil and dark-pupil illumination, dual-camera architecture, immediate blink recovery, and rapid gaze recovery.

If you want to learn more about eye tracking technologies connect us on www.tidentech.com or feel free to ask us on parag@tidentech.com or tidentech@gmail.com call us on +91 9987442274.