for my applications its basically an art installation so the precision and fine tune control isn’t quite as much of a concern because it is generating more of an art impressionistic effect from the eye gaze data visualization type of thing. The mouse control is really just a convenient way to get the eye gaze screen coordinates into my application with little additional programming or SDK under the hood stuff.
Another alternative I could use if there was a universal OSC app that would stream the gaze position data through OSC messaging.
My application is more akin to that overlay gaze bubble thing, its more artistic and fun rather than functional. I just want to create my own types of effects.