Does Cyclops' eye beam follow his gaze or the direction his face is pointing? E.g. if Cyclops crossed his eyes, would two beams go in different directions (or, cooler, would the beam disperse)? If he looked at the end of his nose, would he blow his nose off, or would the beam just shoot straight out?
As far as I can tell, so long as he's wearing his visor the beam follows the direction of his head:
That seems to be the point of them.
But the beams do seem to come directly from his eyes
But I've not seen a single image of Cyclops glancing one way or the other, regardless of the trickshots he pulls off:
So my best answer is: undetermined.