At Tobii we define an eye tracking mode as the combination of algorithms and handling of the eye tracking sensors that is optimized for a particular use case.
In Tobii Pro SDK you can access the eye tracking modes available for a Tobii eye tracker using the get_all_eye_tracking_modes and set_eye_tracking_mode methods available in each language binding.
Most Tobii eye trackers have one default eye tracking mode that is optimized for adult human participants and optimal light conditions.
Some Tobii eye trackers have additional eye tracking modes for adapting its capabilities to other use cases.
For example, Tobii Pro Spectrum has different eye tracking modes for separate groups of nonhuman primate species. Due to differences in physical appearance (facial and eye features), each eye tracking mode has been trained on data from the respective species or group of species. The eye tracking modes for Tobii Pro Spectrum are:
Similarly, the eye tracking modes for the discontinued (only compatible with Tobii Pro SDK versions before 2.0) Tobii Pro TX300 are:
For details about each eye tracker and its intended use, please refer to the user manual for the product.