A lot of responses on this thread. I know plenty of champion level players who are opposite eye dominant. That's no big deal. If you're fundaments and stroke are good....(you keep your head perfectly still, your stance is solid, and you can deliver your cue ball accurately to the intended target)..your brain will identify "why" you miss and you can adjust to get it right. This requires lots of practice *after* your fundamentals are perfect. No secret trick other than loving pool and putting in the time.