Sight after dog's eye popped out?

My 10 yr. old chihuahua got in a scruffle with my friend's bigger dog. Her eye popped out of its socket. I rushed her to the vet and she was in surgery within 10 minutes. The vet placed the eye back in its socket, sewed her eyelids shut, and 10 days later, we had the sutures removed. He said it would take a while for the muscles and nerves to heal. Her eye physically got a good report. No detached retina, no outward damage to optic nerve, lens is great, etc. My question is--she is blind in that eye at the moment. Does anyone know or have had this experience with their dog as to how long it usually takes for the sight to come back? (if it does at all?) I know her optic nerve obviously had some damage when the eye popped out due to immense swelling around it. I know it is in "shock" mode now and takes a while to heal. I was just curious as to how long. I also am aware she may never get her sight back in that eye due to the damage not healing properly. Nerves are delicate. If anyone has had this experience, how long did you have to wait until you saw signs of vision again in your dog's eye? Thank you.