If he's not acting sick, it's probably not this, but if he had some yellow nasal discharge and a cough I say that looks exactly like one of the Mycoplasmas: Gallisepticum (MG) or maybe Synoviae. I can't remember which gets the eyes like that. If terramycin doesn't work, you might need to use some Tylan, which is really good for myco. Sometimes they don't act real sick, but lets hope he gets better soon!