On my new horse's cannon bones, just below his knee down to his fetlock joint, there are strange dots all the way around. His previous owners said "Those are from 'that laser thing' they did" and I just kind of brushed it off. I'll try to get pictures but for now, does this sound familiar to anyone? :/ He doesn't seem to be bothered as far as lame/sore.
PS, I googled "Horse laser treatment" to see if I could find info/a picture and this photo appeared: