We've had some respiratory thing traveling through my small flock for almost a week now, and one pullet is displaying symptoms different than the others. Her face is slightly puffy, and the area around her left eye is a little more swollen than the others. There are tiny bubbles in the corner of her left eye as well. She hasn't had any respiratory symptoms as of yet. Is this eye worm? Her eye is slightly puffy and the lower lid is being pushed upward ever-so-slightly, but we don't have cockroaches around here and I read that that's how they get it. In fact, I've never even seen a cockroach in real life aside from feeder roaches or those at animal shows. So what are the differences between the bubbling/swelling from MG and that of eye worm? Should I treat with VetRx anyway and if so, how do I go about doing that?