When I instruct archery classes I have them check for eye dominance first. We have had a lot of people who were having so much trouble until we switched them to their eye dominance. We had a lady that could have been my mother that couldnt hit anything untill we switched her. She was so mad because her family had been telling her she had to shoot right handed. I believe if you are a new shooter to learn it that way and you will have an easier time. My son and daughter are both left eyed and we started them shooting that way and they have done very well. I am the exception to the rule however. I learned to shoot when I was very young and shot right handed even though I was left eyed. I dont have a problem closing my left eye, and when I had corrective eye surgery the Dr (who was a bowhunter) corrected my right eye as my long distance vision (I have mono vision now) and my left as my close/reading eye. I still will put a camera up to my left eye without realizing it and cant figure out why I cant see anything.If you can shoot with both eyes open, that is probably the best. My hubby does and he doesnt even blink when he shoots. The mono vision can be alittle weird, if i opened both eyes there would be two deer-I just aim at the one that isnt blurry!!