Idk it kind of makes me sick, I feel bad for the horse....there were two completely blind horses at my barn [one had to be put down] & they are really not that happy. They are super nice horses, don't get me wrong & they do have some happy moments, but horses are prey animals so it can be pretty stressful to not be able to see. Just my opinion though
A blind horse can still do what any other horse can it just a matter of trust. Cherish, a completely blind mare was ridden just like the other horses, she could jump and run through the trails. The riders communication and body language were very important though. I think with any animal when they loose one sense their others become more attune. I expect Cherish could read the rider better than most.