Thank you for the update, I'm glad you were able to see the vet and have him treated.
Does he have any other injuries? Is his crop emptying?
Sometimes when they have had trauma it can take a little while for them to come around and eat.
Mare made a video of how to crop/tube feed, you may...
Crowing is good!
If his eyes are swollen shut, use a warm compress to help get them open. Saline flush to the eyes to help clean them, then apply Terramycin eye ointment (found at TSC or online) or Original Neosporin in the eye and surrounding tissue. The ointment can help soften up scabbing...
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I'm sorry about your loss and the rooster.
Can you post photos of him, his face and eyes?
Are you sure both eyes are missing or are they swollen shut? Sometimes it may look like an eye (or two) may be gone/lost, but they are still intact.
Getting him to drink is good, sugar...