Hi Pablo,
Our general approach for users with strabismus is to track only one eye with the eye tracker. In EyeX this is done when setting up a user profile, where it is possible to select the option to track only the right or the left eye, whichever is the dominant eye. The calibration and eye tracking is then done using only information from the selected eye.
Having two simultaneous calibrations as you describe is not possible with EyeX.
/Jenny