Yesterday I found this sub-adult S. limbata at the park. He has a bad eye and also, I have noticed, his antenna on that side is broken off and no longer moves at all. (Normally, a mantid's antennae are always wiggling.) I brought him home and fed him. Fortunately, he can still catch flies OK, but he still seems a little "off".

I don't know if there's any kind of bad stuff in that eye that could travel through his body and kill him. I don't know what will happen to his eye when he makes his final shed in another week or two. I will give him a comfy life for now with plenty of food and protection from predators.

Oh, and here's a post from MObugs about the mantis she found with a bad eye. Cue the It's A Small World music.