I have a kitten that is about 3 mos old. He was from a litter of 2 from a feral cat. I was able to catch him about 2 weeks ago cause his eyes were matted shut and he couldn't see. I put him in a spare bedroom. I've been giving him terramycin twice a day for the past week. Vet recommended. This kitten was very underweight. I could feel his ribs and his spine. He only weighed 1#7oz a week ago. He started sounding congested so the vet gave me an antibiotic to give once a day. Also some nutri-cal so he gains weight. He loves that stuff. Anyway his congestion is better. He's not coughing and sneezing so much. But his eyes aren't as well as I thought they should be. They are open and he hasn't had any gook in them. Altho they are looking better they look like they are sunk in his head. Is this because he is underweight? Will they improve as he gains weight? I mentioned this to the vet and they say to continue the terramycin for a couple more days. He is active. Loves to play. No issues using litter box. Any thoughts?