[ELI5] How does eye dominance work? Is it there something different about my non-dominant eye?

Question

[ELI5] How does eye dominance work? Is it there something different about my non-dominant eye?

In: 9

Answer 1

Point at an object on the wall, but keep your focus on the object and close your non dominant eye. Now switch to the other eye.

Your dominant eye looks straight at the object, the other crosses over to match. This is how depth perception works, the difference between a tiny tree in front of you and a huge one hundreds of yards away is how far the less dominant eye has to cross to meet it.