You can keep him in a hospital tank until he heals. Get some neosporin WITHOUT pain reliever and apply it daily with a fresh new Qtip. He may need systemic antibiotics if this does not work, but if you rinse it well and get the neo started quickly he might be okay. It sounds like he got bit.
I am not sure about the eye. I would recommend antibiotic eye drops until it heals. Dr. Frye is a vet who often helps out. You can email him a photo of the wound and eye and he will often prescribe the necessary meds and ship them to you. He does not charge an assessment free, only the cost of the meds and shipping.
dr.frye.vetatmilan@gmail.com
http://www.milanareaanimalhospital.com/
The hospital tank should have paper towels as flooring, changed daily. Mist the tank with dechlorinated tap water or spring water twice daily. Provide a water dish and change water daily (dechlorinated or spring water). Have a screen lid and be sure to secure it down. Cover the back and 2 sides of the tank with a background, preferably that looks like leaves or camo to help him feel safe. Provide a cave or hide for him. You can add a soft fake plant to hide under also. Be sure all edges are smooth and that it's pet safe and non-toxic. You can find them in the reptile and aquarium pet sections of any pet store. Keep his tank in a quiet, calm area.
You can feed him small crickets. Be sure to remove any uneaten crickets after he eats so they do not bite at his wounds. You could use cut earth worms too, which would be even better.
Pick up some calcium with vitamin D3 amphibian supplement. Lightly dust his food every other day. Also get an amphibian multivitamin supplement and lightly dust his food one day a week.