At this point I would simply go with the topical eye treatment. I am always reluctant to use systemic antibiotic therapy unless absolutely necessary. Good update - keep them coming.
Excellent advice. Get the vetricyn in the AM and start treating his eyes. Dip his bill in a water container or administer water by way of a syringe if necessary. Once the swelling goes down, hopefully he will be OK. It would be rare that both eyes were lost. Good luck, and keep us updated.