One day I went into our coop and found that the smallest pullet was rubbing on her eyes. I picked her up and noticed the corners of her eyes were red. At first I thought she got pecked by another one of my larger birds. So I separated her and started to put antibiotic ointment on it. after a few days it got worse and she started acting like she was blind. Now both her eyes are swollen and it looks like it is her third eyelid that is inflamed. I read about respiratory infections but if she did have a respiratory infection, wouldn't my whole flock be showing signs? My other suspicion is eye worms but i'm not sure. Please help im new at chicken raising and i'm trying the best I can. Any advice would help!