Trent Alexander-Arnold is one of the world's best football players. But can vision training help him become even better? Sports vision expert Dr. Daniel Laby creates numerous challenges to test the theory. Trent Alexander-Arnold is one of the world's best football players. But can vision training help him become even better? Sports vision expert Dr. Daniel Laby creates numerous challenges to test the theory. Trent Alexander-Arnold is one of the world's best football players. But can vision training help him become even better? Sports vision expert Dr. Daniel Laby creates numerous challenges to test the theory. Trent Alexander-Arnold is one of the world's best football players. But can vision training help him become even better? Sports vision expert Dr. Daniel Laby creates numerous challenges to test the theory.