The lateral positioning of its eyes, their overall volume, and the lengthening of its pupils allow the horse to benefit from a particularly wide field of vision. It extends over 340° compared to only 190° for humans. The horse's side monocular vision, which is maximum when it lowers its head, enables it to quickly distinguish anything moving around itself from its left to its right hip. Mounted or harnessed without blinkers, it, therefore, has a much wider field of vision than its rider and can anticipate situations that man does not see.