This morning my rat started to squint with his left eye. It's only his left eye. It doesn't seem to bother him at all, and he doesn't excessively scratch there that I've noticed. Do you think it will go away by itself? I did try to clean around the eye in case something was caught there, but it didn't seem to help. There's not any sign of poryphin right now. I just would love to get a little advice to ease my worries. Thank you!