one or two eyes??

I shoot with both eyes open, regardless of whether it's rifle, shotgun, revolver or pistol. The brain has the ability to discard images from the non-dominant eye. Keeping both open allows for peripheral vision (situation awareness). When I tried using only my dominant eye for shooting, my vision would blur after just a few minutes. As a firearms instructor, I found that those with cross-dominant eyes benefited from using a patch and using the non-dominant eye (situation tactics)
 
I bought my flip up patch also called an ocular from Champion shooting supply years ago I am not sure if they are still in business. I also use an iris for open sights made by Merit this focuses the open sight picture very well by removing the surrounding area and makes open sights a little clearer. I also use either sight black or calcium carbide to black my sights this takes the glare off open sights that are blued and shinny The calcium carbide is mixed with water and lit to form acetylene and makes black soot that wipes right off.

I should add this equipment is used for competition target shooting and practice for the same. I do not think I would hunt with either especially the iris maybe the flip up patch but I don't hunt much.

Mike 
 
Watch the video that I posted. The guy talks about how to use both eyes, how to train your brain to focus on the dominant eye. I'm still working on it. I need to squint (just a squint is all it takes) the non-dominant eye until the dominant eye focuses then I can open them both all the way and my brain will hold focus on the dominant eye. If you practice it a few times it comes quicker and quicker, but when I walk away I have to do the squinting routine again to get my brain back in gear.
 
"Salticon"Thanks guys!!!! i think 2 eyes open is the way, i'll have to practice this. i think squinting one eye adds a variable to my shooting. im a benchrest guy and variables are your enemy when i need fly smacking accuracy @ 75 yards. A patch is mentioned, anyone know where i could find one?? Thanks again!
All you need is a pair of safety glasses and tape the one side of the glass that you don't use. Over time you will get use to both eyes open and you want need the glasses any more
 
"ajshoots"Are there any ambi shooters that have tried to train for weak side as far as keeping both eyes open? I have always been afraid to screw up my dominate right hand shooting. I don't shoot left handed much so I have never put much emphasis on getting better left handed.
I can shoot with my left hand although I am right eye dominant I don't think it should mess up your eyes. I can't see as well with my left eye and when I do use my left eye I still keep both of them open and it doesn't seem to be much of a problem. I don't practice much with my left eye but I have shot a deer in the head at 50 yards hanging out of a tree stand with my left hand.
 
"best" for target shooting would be: both open, but one eye shielded . 

It's best of both worlds.But you're going to have to wear one of those thingies , which makes you look like a try-hard . 

So , one eyed closed : I'd say it's pretty bad. It makes your open eye start to twitch, and it starts to fatigue your face muscles. It's all around crap and horrible for prolonged shooting sessions. (personal opinion btw!)

Both eyes open : No face-muscle fatuiging and twitching, but, it does cost (brain?) energy . At the end of a target shooting session i notice it gets more difficult to focus the shooting eye, and i start to close my left eye because i have to .