Tom In Cincy said:
Is there any 'proof' or is it all 'opinion' ?
I've never seen any proof about this, yet lots of players and instructors use this 'dominent eye' as a reason for not aiming correctly.
Is there any medical/physical research that backs this Dominent Eye claim?
I don't think this brings any clarity to your dominant-eye question, but my somewhat unusual vision situation is kind of interesting.
When I quit playing pool about 30 yrs ago, one of the reasons was because I became nearsighted. Not badly, but my distance vision got fuzzy enough that I couldn't shoot pool without glasses, and I hated wearing glasses to shoot pool.
About 3 yrs ago, I had Lasik surgery on my right, dominant eye. Only that one eye. I can't read with that eye, but distance is now crystal clear. My un-operated left eye remains near-sighted. When I read, my left eye dominates and I can read fine. (I only had one eye done so that I wouldn't need glasses to read, which would have been the case if I had had both eyes done.)
At a distance, including on the pool table, my right eye dominates, and I see fine. If I cover up my right eye and look at a 9-ball rack from the head of the table with only my near-sighted left eye, it's a big fuzzy blob, with individual balls only barely discernible. If I open my right eye, though, everything sharpens up crystal clear.
Each eye is helping the other, and the brain adapts. The doctor explained it to me before I had the procedure done. You'd think that when I look at a distance my now-perfect right eye would see crystal clear but my left eye would fuzz it up. Doesn't happen. Left eye contributes depth perception, but it doesn't interfere with the clarity I get from my right eye. I still find it kind of freaky.
If I had surgery on my right arm, would my stroke improve? Hmmmmmm