Just like with hands.
Many left-handed people can also use their right hand, but there is definitely a difference between their left and right hands.
It includes the eyes.
A very simple test.
Make a small hole with your fist, keeping both eyes open as you look through the hole. Find a letter or a specific object, ensuring you can see it.
Then close either your left eye or your right eye and look again, one of your eyes will still be able to see the object through the hole. But the other eye will see your hand, the view will be blocked.
The eye that can see the object is your dominant eye.
Most people's dominant eye is their right eye.
Most people's dominant hand is their right hand.
Most people's dominant foot is their right foot.
There may be some connection among these.
But anyway... Ribery is "no weak foot," yet he is not ambipedal.
