I care for two one eyed wonder ponies, each had an eye removed at NCSU. Cody had a pasture accident in 2018, when he was 26; he returned to work as a therapeutic riding horse without missing a beat and is still one of our best therapy horses, who needs no special handling even being led by multiple volunteers each week. He even did a longlining demo a few weeks ago at a hippotherapy workshop for us. Kosmo had a fungal infection in a corneal ulcer that we fought medically at NCSU for three weeks before removing the eye. His surgery was in 2012 when he was 17. He returned to work immediately and was back to jumping a few weeks later; if you couldn’t see that his eye was missing, you would have no idea under saddle that he can’t see, as he goes just the same. He is retired now just because he opted out of working, but he is the alpha horse in turnout and is not bothered in the least by the loss of vision. He lives with my parents and my mom regularly lets him wander in from the pasture to his stall on his own.
I 100% attribute both of them doing so well to a fabulous vet and friend who told me before Kosmo lost his eye that as a horse, he had no frame of reference that this was abnormal, and that as far as he knew, all horses lost an eye at 17. So the only way he was going to get the idea that something was wrong was picking it up from us. We were really careful with both horses to only have people handle them for the first couple of weeks that were calm and confident and weren’t going to fret incessantly over the vision loss, and I think both of them responded really well to that.
Cody is in Mebane and Kosmo is in Pittsboro, you’re more than welcome to come meet either of them if you want to see how well they do. I promise it is not the end of the world, horses are SO much more adaptable than we are! I do think also that one of the reasons they adapt well is they have monocular vision vs binocular like us, so their brain has never had to understand images from both eyes; they function independently. So it’s not as much of a loss as it would be for us I think.