Tobii Pro Fusion

Reach further with your research

Our mid-range research eye tracker is versatile and powerful, capturing gaze data at 250 Hz. This screen-based system supports both fixation and saccade-based studies, inside and outside of the lab.

Breaking research barriers

Tobii Pro Fusion opens up your research possibilities, offering a powerful yet portable behavioral research solution. With sampling frequencies of up to 250 Hz, and two eye tracking cameras, Tobii Pro Fusion expands your data collection setup to more research populations, scenarios, and data requirements.

testing child in school with eye tracker

How it works

Using Tobii Pro Fusion in 3 easy steps

Set up

Tobii Pro Fusion is compatible with a range of standalone monitors and laptop screens up to 24” in size and connects via USB. It can also be placed on a tripod for studies of real-world stimuli.

Capture

Multiple sampling rates of up to 250 Hz allow you to collect data for eye movements such as fixations, saccades, and smooth pursuit. Additionally, you can record pupil diameter and eye openness data.

Understand

Tobii Pro Fusion works with our software, Tobii Pro Lab, supporting researchers from experiment design to data analysis. Calculate eye tracking metrics, create visual representations of data or export for further analysis in other software.

Pair it with our software

Tobii Pro Lab + Tobii Pro Fusion

This solution supports both fixation and saccade-based studies, inside and outside of the lab, allowing you to quickly dive into eye tracking research. Our software provides significant flexibility, enabling you to conduct advanced experiments that yield deep insights into attention and cognitive processes.

Explore Tobii Pro Lab

Features

Data you can trust

Works across the population regardless of age, ethnicity, or corrective lenses
Maintains tracking robustness in different lighting environments
Keeps high performance through natural head movements
Powerful yet portable behavioral research solution

Fields of use

For a range of scientific research

Tobii Pro Fusion provides a flexible solution that opens new possibilities in a variety of research fields. Discover how you can advance your research in:

Psychology and neuroscience

Discover the connections between eye movements and cognitive processes to progress our understanding of human behavior.

Learn more

Eye tracking study small child Tobii Pro Fusion

Developmental psychology

Study attention and gaze patterns, illuminating visual perception, social cognition, and language acquisition in the early stages of child development.

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Clinical research

Tobii Pro Fusion allows researchers to explore biomarkers and new tools for the assessment, rehabilitation, and treatment of psychiatric and neurological conditions.

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Did you know?

Tobii Pro Fusion eye tracker has been featured in 300+ scientific publications. Discover the latest trends in eye tracking by exploring our Tobii publication library.

Go to our library

About the tech

Our patented 3D eye model delivers high-quality gaze and pupil data
Two eye tracking cameras, taking up to 250 images per second
Bright and dark pupil illumination modes automatically selected for best performance
Fully embedded processing
Easy USB or USB-C connectivity
Compatible with all main operating systems
Accurate software synchronization options with a wide range of external devices, such as EEG, ECG or GSR

Compare eye trackers

Not sure which eye tracker to choose?

Compare our screen-based eye trackers to decide which one is the best choice for your research needs.

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Transparent product quality methods

Tobii Pro Fusion's high data quality has been confirmed through extensive testing methods that span from systematic variations of the environmental conditions to a general assessment of the eye tracker performance with a large population of individuals.

Find out more about our quality work

Our study participants are people with Autism Spectrum disorders or Schizophrenia where having an eye tracking system that is unobtrusive and allows for head movement is imperative. The dual eye tracking cameras, sampling rate and discreet design with Tobii Pro Fusion will open up the possibilities for more extensive research on our demographic.

Dr. J. Adam Noah

YALE SCHOOL OF MEDICINE, BRAIN FUNCTION LAB

Specifications

Technical Specification

For definitions of the terms used in the tables below, see the Glossary on Tobii Connect.

For more information about output data and the supplementary data stream, please read the Tobii Pro SDK documentation.

The characteristics of the gaze data from an eye tracker are described in terms of accuracy and precision. For more details, take the Accuracy and precision course in Tobii Academy.

Eye tracking technique	Video-based pupil and corneal reflection eye tracking with dark and bright pupil illumination modes. Dark pupil tracking is supported in all sample frequencies. Bright pupil tracking is supported at 60 and 120 Hz. Two cameras capture stereo images of both eyes for robust accurate measurement of eye gaze and eye position in 3D space, as well as pupil diameter.
Eye tracking mode	N/A (default)
Sampling frequency	30 Hz, 60 Hz, 120 Hz, or 250 Hz (max. frequency depends on hardware version)
Precision¹	0.04° RMS in optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.2° RMS in optimal conditions (raw signal)
Accuracy¹	0.3° in optimal conditions
Binocular eye tracking	Yes

Eye tracker latency	Mean latency < 13 ms @ 250 Hz (SD < 1.2 ms)²
Blink recovery time	1 frame (immediate)
Gaze recovery time	250 ms
Data sample output	Timestamp Gaze origin Gaze point Pupil diameter
Eye openness data stream	Eye openness stream is available in eye tracker set to 120 Hz, 60 Hz, and 30 Hz sampling frequencies. Note that the eye openness signal is not available in 250 Hz due to the processing power limitation. Eye openness stream has the same frequency as the gaze stream and will have the same timestamps. Eye openness data is provided in millimeters for each eye individually.
Eye image data stream	Eye image data stream frequency is approximately 4 Hz (one image per eye). Zoomed-in eye images available in tracking mode. Full-frame camera images are available in gaze recovery mode.
TTL input stream	Not available
Tracker and client time synchronization	Integrated between the eye tracker time domain and the client computer time domain.
User calibration	Binocular, Monocular

¹Tobii uses an extensive test method to measure and report performance and quality of data. Please download the test report for more detailed information.²Visit Tobii Connect for more information on how to optimize your Tobii Pro Fusion setup.

Head movement tolerance	Excellent Dual-camera system, with more images than a one camera system, gives a more accurate data calculation and the best level of precision and robustness for head movement.
Operating distance (mounted on screen)	50 cm to 80 cm (20” to 31”) from the eye tracker
Freedom of head movement (width x height)	Freedom of head movement at 65cm distance 40 cm × 25 cm (15.7" × 9.84") Freedom of head movement at 80cm distance 45 cm x 30 cm (17.7" x 11.8")

Head movement tolerance

Excellent
Dual-camera system, with more images than a one camera system, gives a more accurate data calculation and the best level of precision and robustness for head movement.

Operating distance (mounted on screen)

50 cm to 80 cm (20” to 31”) from the eye tracker

Freedom of head movement (width x height)

Freedom of head movement at 65cm distance 40 cm × 25 cm (15.7" × 9.84")

Freedom of head movement at 80cm distance 45 cm x 30 cm (17.7" x 11.8")

Optimal screen size	Up to 24" (16:9 aspect ratio)
Recommended monitor	N/A
Tracker setup options	Eye tracker mounted on a tripod, allows for even larger screens or physical objects to be tracked.
Participant setup	Very simple and easy. Typically, less than 1 minute.

Software and framework compatibility	Tobii Pro Lab Tobii Pro Eye Tracker Manager Tobii Pro SDK Any application built on the Tobii Pro SDK

Operating systems	Windows, macOS, Linux

Hardware versions	60Hz 120Hz 250Hz

Dimensions (L x H x W)	37.4 cm × 1.8 cm × 1.37 cm (14.72“ × 0.70“ × 0.53“)
Weight	168 g (5.9 oz.)
Connectors	USB Type-C (USB Type-A to Type-C adapter provided) AC power
Data Processing	3 Tobii EyeChip™ ASIC with fully embedded data processing

Eye tracking cameras	2 x Tobii EyeSensor™ modules
Illuminators	Dark pupil illumination modules Bright pupil illumination modules
Power consumption	Typical power consumption: 4.3 W Max. rated power consumption: 9 W
Power options	Directly via USB Type-C connector, or with provided AC power adapter, when using a computer with USB 2.0 Type-A port

Downloads

Find out more about the product.

Frequently asked questions

For additional information, visit our comprehensive FAQ page.

Check out our FAQS

How can I find out the price of the eye tracker?

If you’d like to see the prices for any of our eye tracking systems, fill out the form at the bottom of the product page. One of our salespeople will be happy to contact you with a breakdown of our pricing structure.

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Pair it with our software

Behavior research software

Tobii Pro Lab

Our analytical software helps guide scientific and academic eye tracking research. Take control of your study and analyze the data in detail.

APPLICATIONS AND DEVELOPER KITS

Tobii Pro SDK

Free software development kit for building analytical applications for Tobii's screen-based research eye trackers. Multiple-platform support for several programming languages.

Applications and developer kits

Tobii Pro Eye Tracker Manager

Free software to help manage your screen-based eye tracker. This application helps set up the eye tracker, assists with user calibration, and troubleshooting.