rat worries

[ratcreature]

I just noticed that my rat Krümel has a really odd milky discoloration (?) in/on his left eye, that I'm pretty sure wasn't there yesterday or even this morning. It used to be fully black like rat eyes are, and now it looks weird, though I can't make out what exactly this is. The eye doesn't look injured or visibly infected, though he seems to squint it a little. I have no idea what this could be.

I guess I'm going to take him to my vet tomorrow, though maybe I'll call beforehand, because it's only emergency opening hours on the weekend (and they charge extra for it too), and I'm not sure this is an emergency, because he acts completely normal, is eating and is now running around, chewing on my furniture, so I don't know. But his eye just looks wrong. I hope this isn't something serious. *is worried*