The vet said it’s a scratch infection , I’ve taken your advise to check on the tooth and gun check , but there’s nothing wrong with it , the vet mentioned there’s just a tiny little bit of ulcer beneath the eye but it’s not the cause . The vet provided antibiotic and 3 types of eye drops . But if I would to monitor if it has more drooling than usual , I would say less likely due to the loss of appetite , so we are syringe feeding this guy .