How to determine which eye is dominant:
1.Hold both arms straight out in front of you, overlapping your hands to create a small hole between your thumbs and forefingers.
2.Choose a small object, like a doorknob, to focus on. With both eyes open, focus on this object through the hole.
3.Keeping your head and arms still, and still focusing on your object, close one eye. Then close the other.
4.With one eye open, the object will remain in the middle of your hole. This is your dominant eye. With the other eye open, the object will jump to the side or disappear from the hole. This is your non-dominant eye.
Eye dominance is important for many people, such as people who participate in sports which require aim. It is also important when considering monovision or eye surgery. Interestingly, hand-dominance does not correlate with eye-dominance. Also, most people automatically use their dominant eye when looking through a camera or microscope.
