What 1 eye sees other eye sees, dominate eye is all bs smoke & mirrors! comes down to what your brain perceives how works best for each i guess.
I could go in to it and prove beyond doubt it is not BS but I talk too much as it is.
But the reason a player usually puts his dominant eye directly over the cue stick
is because usually the vision center is at the center of the eye: the pupil.
But there is some slight variation, probably the way a particular eye bends the light
going through the cornea, pupil, and lens then how it resolves on the retina.
So the dominant eye in a particular case might be optimally placed slightly to one side or the other.
This is going to probably be the last time I mention Cole Dickson. May he RIP.
I think it was on this forum maybe 12+ years ago.
I forget exactly what or how the conversation went.
I was considering about how really good Cole might have been.
Another poster said he was in the top 300.
From this I believe he meant that Cole was in the top 300 that ever lived.
Or maybe among those that were living at the time.
Either way clarifies the point.
And here he is, clearly right-handed and left eye dominant.
"Takin' it to the street."