OK, I figure if anyone can understand and solve this problem, you guys can!
My question is about using the front sight of a pistol. Let's leave aside issues of using sights vs. instinctive, etc. Here's the issue: I was introducing an optometrist friend to shooting, and I was teaching him what I've always been taught: focus on the front sight. And the he pointed out something to me that I have NEVER noticed: focusing on the front sight is IMPOSSIBLE if you have both eyes open and want to see just one target He then demonstrated this to me. I hope I can explain this clearly: If you have both eyes open, and focus on the target, you'll see one target. If you have both eyes open and focus on the front sight, you'll see two different out-of-focus targets, because you're looking down two crossed visual lines. The front sight will be one one target (looking through the right eye) and another target to the right (looking through the left eye). So if you want to focus on the front sight, you have to actually pick one of the two out-of-focus targets while you're shooting! Try this with your own gun and you'll find the same thing, I think.
This baffled me - what have I been doing for 25 years if I wasn't focused on the front sight? I did some checking of what my eyes were really doing, and it turned out that when I am shooting quickly, my eyes are actually focused on the TARGET, although as strange as it sounds, my ATTENTION is actually on the front sight. (Kind of like if you deliberately let something in your vision go out of focus but keep looking at it.)
I feel like I just found out that my wife is cheating on me with my best friend - is there a better way to do it than the habit I've accidentally formed? Is this a phenomena that is widely known but I'm simply unaware of? Counsel me, oh wise ones!