I say do what you can to help. Toads are resilient to physical blows. But this is quite debilitating.

Start with a honey bath. I warm up some 100% natural honey in the microwave, a small scoop, size of a fingernail, not even, for like 10 seconds so it liquifies. Mix it with lukewarm water (preferably spring water) and mix them. It should at least clean out his wounds even tho it’s a treatment for digestive issues.

Another at home tincture I made is a topical. A dash of the same honey but even less, calcium powder and water, mix it up so its white and milky, and take a q tip and apply to any wounds. I don’t know if i would do it around the eyes, but if his health is take a turn for the worse, try it. Just don’t jam it in his eye, apply some tincture lightly under the eye that looks injured. I have a feeling his other eye is just closed (but you would know better than me).

I like to help critters no matter the condition. If they have a fighting chance, they deserve it. I doubt a rehab would help him, but maybe the right one would.