From my understanding of touchless sdk, eyeball mouse tracking wouldn't be very possible for the following reasons:
1: your eye color would have to be very different from your face and environment colors (brown skin brown eyed people would have no chance).
2: you wouldn't be able to move your head an inch or the software will think the mouse is moving even though your eyeball stays in place.
3: touchless sdk can technically monitor a blink by the absence and then presence of the marker (your eye), but once the marker disappears the software will try it's hardest to find it and
pickup false positives.
Don’t give up on your idea because of these points, now that you are aware of them you can find a way around them.
I stumbled onto touchless with my project after a series of a few simple "webcam object tracking" searches in Google. I thought it was pretty simple to find.