His visual focus ( from wide to narrow scope ) is also dictated by the action .
The natural flow of play , which the referee has no control over , dictates the side of the ice that the ref typically assumes in the end zone .
referee 's visual focus ( from wide to narrow scope ) is also dictated by the action .
The natural flow of play , which the referee has no control over , dictates the side of the ice that the ref typically assumes in the end zone .