I have two frizzle chicks here and they're 4 weeks old. Thet were doing fine up until three days ago. I noticed that one of them had its eye closed like he was sleeping. I wasn't to worried until yesterday when I noticed the other chick had both eyes shut. They look sore, so I've removed them from the other chicks (who are all fine) and have placed them in a separate brooder, I'm using polysporin drops. These chicks are eating and drinking but seem tired. I don't know what else to do.