It sounds like a possible infection. Someone in the Amazon comments used these eye drops on their frog. https://www.amazon.com/Zoo-Med-Repti-Turtle-Ounces/dp/B0002DJ0AQ?th=1 If it were me, I'd send a message to the Zoo Med website to check and see if it is safe to use on your toad. (There's also an Amazon question about using it for a toad.)
I'd also give it a honey bath in case it has some kind of bacteria. It's a cutie. I hope it clear up..