how far can horses see
exists and is an alternate of . A horse can see up to about 1 mile on flat ground. Ans2:You and horses can see hundreds of light years when you look at the stars. Absolute distance is not necessarily how you would judge how well a horse sees. Based on the size of the eye, you could expect that a horse can see 50% better than a human except that does not take into account the shape of a horse's pupil.
Even when the horse has focused as best it can, its sight is only three-fifths that of a human. In other words, when looking at an object twenty feet away, the horse sees only as much detail as a person with twenty-twenty vision would if the object were thirty-five feet away.