I have a few young pullets that each have one eye swollen shut. When dh forced the lid open, he found this white thing covering the eyeball. He worked it out and it's gross. It's semi hard and it's over the eye. Has anyone else ever seen or heard of this. We washed the eyes out with a weak saltwater solution but I've had one pullet like this for over 2 weeks. So far it's only been one eye and she is still eating and drinking fine.