Ive seen many cuts and bites near the eyes on a dog, even into the socket, but funny enough, its very rare for a dog to loose an eye from regular fox work in my opinion. Ive only seen one terrier that lost an eye out of many hard working dogs.
Most fox bite wounds are just minor punctures, and if the dog is treated properly and given time to heal, it can get right back at them!
Other than that, the injuries you will see go hand in hand with running a dog, no matter what the quarry species.
that the word time to heal summertime we used to call it ray atb AT