That is funny!A delay in treatment. Hopefully it´ll get sorted soon.
Well, mine only got an eye problem once..a young gander some time ago. I diluted ACV in water, but some corn in the bottom of the bucket, and left him to it. He had no problem with the water, ate the corn. The next day he was fine, so now I do it from time to time, even though they´ve never had another problem. (The stream gets a bit mucky from time to time when the farmer further up does a hose-down, and they´re bound to pick up something..so, that´s what I do. Seems to work.)

Although he did fine with the Baytril.