I sort of agree with you, it's not how your eyes work, its how your brain interperts what YOUR eye sees, it's not eye, hand, coordination, it's eye, brain, hand, coordination, I found my eye tells my brain that my stroke is TRULY straight about 1/2" to the right from the center of my nose, when I aim using this part of my eye, my brain tells my arm that my cue is moving straight, a pro billard showed me this in my very 1st lesson, here's a great drill, I call it "whitey don't lie" , put the cue ball on the foot spot and an object ball on the head spot, hit the cue ball center ball and drive the object ball to the rail, if your stroke is truly straight and you hit the object ball dead center, the object ball will come back and will drive the cue ball back over the foot spot, it's a truly humbling drill, you will be doing well if the object ball comes back and hits the cue ball somewhere CLOSE to center... .