Now that we know our dominant eye takes on more responsibility when it comes to our sight, how do we know which one of our eyes is which? As it turns out, you may be able to look at your dominant hand for a clue. WebMD reports that most often, a person’s dominant eye will be on the same side of the body as their dominant hand. While this is not always the case, if your left hand is dominant, for example, there’s a good chance that your left eye is also the dominant one.
Alternatively, there are some easy DIY tests you can try out for yourself to help find your dominant eye. For example, experts at Kugler Vision suggest forming a triangle-shaped gap between your hands by touching your pointer fingers together to create the point of the triangle and placing your thumbs together to create the base. Hold your arms out in front of you and focus your triangle on an object farther away from you, almost as if you were going to take a snapshot of it. While looking at the object through the triangle, close one eye before slowly switching and closing the opposite eye. Between your two eyes, you’ll notice that the object either remained within the frame of the triangle or jumped out of frame. Your dominant eye is whichever eye was open when the object stayed in the middle of the triangle.