That can be a problem. I had to get prescription shooting glasses to overcome my left eye dominance. I'm much better shooting shotgun now.
Before the bead wasn't near the target at trap range. Had a real problem slinging shot.
It really isnt a problem now. I can pick up the sight fairly well with my right eye. I can see it being more accurate for target practice but I really need to see the end of the barrel for self defense.
Hard to explain for me but dang, I got my finger on the trigger a lot sooner with open sights.