Injured frog

[bshmerlie]

I know frogs can regrow parts of their bodies, I wonder if that goes for complex parts such as eyes?

I think your thinking of the salamander. Some can regrow limbs, tails and even parts of the eye. But frogs lose their regenerative abilities like that when they reach adulthood. He'll probably adapt to live without the eye. If you're going to keep him in a tank outside just make sure it is secured from predators. Looks like you have yourself a pet.