I had a Wood frog with only one eye and she couldn't hunt properly. Her aim was way off virtually all of the time. She rarely caught her own meals and when she did it was a miracle. Part of the time I had to force feed her. Eventually she got a little bit better at hunting, so I released her and hoped for the best. My point is that if the toads eye can be saved he will likely need a lot of attention and be virtually surrounded by bugs just to catch one. He may get the hang of it eventually though, but he will be harder to care for than your standard toad. Good luck, and I hope he will be able to live a fairly good life. Congratulations on being so determined to help him!