I had a little game chic that past away Monday morning. She started out with her eyes being swollen, so my husband and I wiped her eyes with salt water and made sure to keep antibiotics. she stopped eating and drinking so i got an eye dropped and made her drank. I am scared that my other chickens are going to get sick. We have about 25 chickens and I can't lose them all. What is going on? Has anyone had eye problems before??