The Eyes Are the Window….especially for Horses

Another reader question that came from the Webinar:

Sally Leong asks:
How does the horse use its eyes in relation to the brain’s perception?

Dear Sally,
Great question! The horse can see almost 320 degrees around it; however, it’s mostly monocular viewing (meaning a single eye) as opposed to stereoscopic (like us humans), where there is depth perception. The horse can only see simultaneously with both eyes to about 20 degrees in front. This is why you will observe your horse dip its head a little bit before it goes over an obstacle on the ground. It’s trying to use its stereoscopic vision to see the obstacle better with a full 3-D view. Hope this illustration (from Zen Mind, Zen Horse) helps:

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