Last month my cat has gotten into a fight with another cat. He had an eye injury. Vet told me it was a corneal ulcer and it will heal slowly and gave me oflox antibiotic eye drops. He was doing good. It got healed except a small light shade of grey spot on his eye. He completely opened his eye and fine till yesterday. But i don't know what happened his eye lids became little pink in the morning. I checked his cornea it's fine. And he started to shut his eye again from today afternoon. So I checked his cornea.. It was good but his eyelids were pink and little swollen. So I gave him those eyedrops again in the evening and kept him in his bed. He slept for 2 1/2 hours and woke up. He looked very uncomfortable and hiding his face. So I tried to open his eyes.. His third eyelid has completely closed the eyeball. His eyeball is not even visible. He is not able to open it. After an hour it has swollen a lot. And he is not even able to close his eye now. His third eyelid is totally swollen covering the complete eyeball. He ate normally though. I called the vet.. He told me to administer the eyedrops every 2 hours and bring him tomorrow morning immediately. I just can't understand he was good and I thought he was healed what happened now. I'm scared to death. Does anyone know what is it?