Interesting. Do you mean you use 2 different eyes for 2 lines or you just wanted to demonstrate that the picture changes when you move the eyes?
Why I am asking. I am trying to use the same strongest vision (vision center) from position up and when down and I am able to “see” 2 lines at the same time coming from my focal point and going through certain points ONLY for certain ball distances, which can be explained geometrically.
So instead I try to recognize the shape which connects CB edge, OB A, OB edge, CB Center and how I perceive it is not a symmetrical figure. In other words I do not try to be behind both lines at the same time or lines going out of my vision center.
At the same time these are not different shapes I can recognize them for different shots.
http://forums.azbilliards.com/showthread.php?t=307645
In post number 4 Stan says "Sometimes you right eye picks up one line and your left eye will perceive the other line."
He also says "When perceiving your visuals, you are not directly behind either line."