The left part of the brain is responsible for the right side of the body and vice versa. Blocking one eye can improve the other's visual capabilities because of the cerebellum, a mini-brain under the brain responsible for coordinating movements and balance.
The left part of the brain controls the right side of the body and vice versa. By blocking out one eye, the other eye will become stronger, and the cerebellum plays a crucial role in helping us see properly.