A few days ago one of my ladies had one eye shut all day (her left eye)... the next day it was swollen. I did a saline eye wash and put some antibiotic ointment in her eye. The next day another lady had her left eye shut and it seemed to be itching her! I gave them both eye washes and antibiotic ointment. Now I have a third with her left eye shut and she's itching it... I have an invasion of an itchy infection that only attacks the left eyes of chickens!! Not a single one of them is lethargic or showing symptoms of upper respiratory illness. I don't see any bubbles in the eyes, though they are a little cloudy when I open them. Occasionally, they will open them on their own, but not much Will you all please give me suggestions on proper care (including names of medications)? Also, do I need to disinfect the ENTIRE roost (they roam all day and only go into the coop at night)? If I need to give them an antibiotic, please let me know the proper antibiotic to use. Also, please let me know if I should treat the entire flock with an antibiotic as a preventative. I need to attack this today before it hits the whole flock. Thank you!!