Hello . My dog's left eye is slightly sunken with a visible third eyelid since 1 month. We went to the vet and he assured us that there are no injuries around but his teeth are bad. After 1 week, we removed upper molars from the left. When the anesthetic is placed around it, it recovers, but then a third eyelid appears again and around the swallow. No signs of pain in about . He is on an antibiotic for an oral infection and was on pain meds for 3 days. Today is the 5th day after the removal of the teeth, but the area is not getting better. What to do? Please help!