I have a female duck with pretty bad foamy eye. Unfortunately all of my ducks have a suspected respiratory viral issue going on. They are all kind of sneezing/coughing. Still eating and drinking normally, acting normal otherwise. Just the one duck has foamy eye and she's shaking her head a lot to clear her eyes. I'm wondering what the treatment for this is? I've never had this issue before. I called my vet who is supposed to call me back, he said he had a lady who used a soluable powder off amazon for her duck that they had tried multiple things for and this powder cleared it up. He hasn't heard back from her yet though. My only other option is antibiotic shots from the vet. What is the best course of action?