Tobii Ocumen is a premium eye tracking solution that delivers advanced data streams and filters, powering new capabilities in specialized VR applications such as health assessment, therapeutics, and research.

Tobii Ocumen is currently available for Pico Neo 2 Eye and can be licensed directly from Tobii.

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Tobii Ocumen requires a license. Please contact us via our contact form and choose ‘Commercial Inquiry’ for businesses or ‘Research License’ for academic and non-commercial research.


Tobii Ocumen provides you with a collection of developer tools to enable you to process and filter data using premade eye movement classifiers for eye behaviors such as fixations and saccades, as well as the ability to customize them.

Tobii Ocumen also provides you with the Advanced API which contains advanced eye tracking signals and data for scientific-grade analysis and applications.

Advanced API

The Advanced API gives you access to extensive eye tracking capabilities and additional data streams, intended for more in-depth analysis, particularly in health-related applications and advanced research in academia or industry.

We provide an overview of the Advanced API below, or you can check out the API Reference for full details.

  • Left and Right Gaze Rays
    In addition to the combined direction signal, you get access to each eye’s separate direction and origin. An example use case of this is detecting and treating strabismus or lazy eye.

  • Pupil Diameter
    The user’s pupil size, which changes according to light intensity, emotion, and other factors. This could for example be used in conjunction with other biometrics to measure a person’s emotional response to a stimulus. Most eye trackers cannot compensate for the magnification caused by a pair of eye glasses, so consider monitoring the relative changes of pupil diameter rather than absolute values.

  • Position Guide
    This signal tells you if the headset is in a good position relative to the user’s eyes, which is useful to guide users to adjust their headset into the optimal position for rendering and eye comfort. This can also be used to detect if users adjust the headset during a recording or session.

  • System and Device Timestamps
    The device timestamp is used to synchronize the eye tracker clock with the host system clock in order to correlate eye tracking data with events happening on the host system. On the Pico Neo 2 Eye, system timestamps have been synchronized to the host system clock and can be used directly.

  • Metadata
    Metadata about the connected eye tracker, containing information about the model, serial number, runtime version and output frequency. Useful for debugging purposes or when describing the eye tracking hardware in a study design.

Tobii Ocumen Filters

Tobii Ocumen provides you with access to premade eye movement classifiers and filters as well as the ability to customize them. The available classifiers include fixation and saccade filters and are grounded in academic and industry research.

Getting Started

With Tobii Ocumen, you will get access to the Tobii Ocumen Sample Project, a Unity project which includes the Advanced API together with a pipeline and documentation for how to use the eye movement classifiers and filters.

To get started, go to our Tobii Ocumen Developer page.

The Tobii Ocumen Sample Project contains an example scene for visualizing some of the signals and filters in Tobii Ocumen (see video below), where you also have access to the source code to see how everything works and is set up. Without a license, you can still try out the example from the Tobii Ocumen Example page.