My cat, Captain 'Kirk' is 12 years old, has never had any problems with his right eye. When we got him home, his third eyelid would not close. (One of his teeth was extracted, but, it was an upper left molar.) We went back to the vet 5 days later, he was given an antibiotic injection, and, we took him home. After 5 days there was no improvement, so, back to the vet, who gave him a steroid injection. Now, we are almost 3 days post steroid, and there is absolutely no improvement. Can someone tell me if the eye may have been damaged while the teeth were scaled? Perhaps an elevator punctured his gum and damaged his nerve? He is a Maine **** (cameo) - had his distemper shot the same day. Could this be permanent?