There is an article, which I can't find but when I do I will share it with you, cause after reading my explanation below, it isn't that great.
I will try and explain as best as I can what I took away from it.
Set something small down about 10 feet away from you, if you are at a pool table, perfect, set a piece of chalk on the headrail and stand at the footrail
1. With your right hand, point with your index finger at the chalk with both eyes open.
2 Close your right eye, is your finger still pointing at the chalk?
Do #1 again, then close your left eye, is your finger still pointing at the chalk.?
I repeated with my left hand and got the same results.
When I close either left or right eye, my finger moves equidistant to either direction. SO I actually have centered vision.
If when I closed my left eye, my finger was still pointing at the chalk, that would have meant I have a dominate right eye.
Same here. In fact, when I focus on my finger (both eyes open) I see two pieces of chalk. When I focus on the chalk I see two fingers.