Horses can see in two directions at once. Most of the time, a horse has monocular vision. This means a different image is seen by each eye so that a horse is seeing two different pictures at the same time.
Your horse can also have binocular vision. Binocular vision is when both eyes work together to see one picture (humans have binocular vision). A horse only has binocular vision when it is looking down its nose.
Your horse has a wide visual range. Your horse can see completely around its entire body except for two small blind spots. One directly in front of its face, underneath its head, and the other directly behind itself. This is why it’s very important not to walk up, directly behind a horse – you are in its blind spot and if you startle it you can get kicked.