Center vision is the only thing that matters. That's where your head needs to be to "see straight" in your brain.I got back into pool a little over a year ago and I felt I was progressing quickly, all of the sudden I seemed to hit a wall and my play became inconsistent, break & run 1 week, miss 3 ball in hands the next, during my stroke drill of up and down the table with the cue ball returning to my tip I found that I had to shoot slightly to the left to hit "true center" my head was centered over the cue stick and my pre shot routine consistent but I was missing easy shots and couldn't understand why, so at the end of our league at the banquet I heard some guys talking about Dominant Eye, It's a really easy test and couldn't believe the results, I am definitely a Dominant Right Eye, I couldn't wait to get home and try it out, I started lining up with my right eye over the cue shaft and now center ball was center ball, the stroke drill was true center now, within a week of the change my consistency jumped dramatically, you can find the test online and it only takes seconds to do, it may not be your aiming it may be the sight picture you see is wrong because of where your eyes are when you aim, hope this helps.
Notice the dominant eye test is always done closer than arms length... Just saying...
My vision center is on the inside of my nose on my dominant eye side.