I have a turkey that had a swollen eye, and took him to the vet.. they looked into her eye and told me it looks like she was scratch or pecked from another turkey. She is on some ointment but my vet had already told me, her eye will not heal, that she will lost her eye.
She had a very low appetite at first, so I started giving her electrolytes. She is eating and trying to fly now so the electrolytes did help. The good thing is turkey’s only us one eye at a time to see.
I’m so sorry about your duck