most people or at least half have the same eye dominance as their dominant hand but there are exceptions (like me). I'm right eye dominant but left handed when it comes to shooting. although this helped me to train more with both hands, their is a simple way to find out which eye is dominate to each individual. hold both arms out in front of you with both hands touching, looking at the back of your hands. index touching index, thumbs touching thumbs, like a triangle. with both eyes staring through the center of your triangle, close one eye then switch to the other. the eye (when closed and opened again) that causes a shift (looking like the hands are moving) is the dominant eye. i hope i described it well enough. it's easier in person but is shear proof to rely on.