PERIPHERAL
Packin4me: I was surprised no one mentioned the subject of peripheral vision, except for Bkreutz's specifically having his bacon saved (Thanks, Dad! Right?) by keeping both eyes open. Closing the non-dominant eye severely limits the P-vision on your off side. Definitely not a good thing when defending yourself. I get a kick out of instructing a novice to shoot w/both eyes open when they say something like, "Which gun do I aim over?".
I'll certainly admit, when testing loads I'll TARGET SHOOT with only my dominant eye, but otherwise make a habit of keeping them both open & learning how to ignore the Ghost Gun.
Good Luck, Hank M.