It's a good thing we did. She somehow had managed to get a scratch on her eye, which we were only able to see when they put a special dye on it that lights up under a blacklight (it also makes the nose light up, since tear ducts are what keep kitty noses moist, so that was kind of neat). Our best guess is that Mika may have accidentally clawed it when they were rough housing (they get pretty wild sometimes).
They gave us a soft Elizabethan collar to keep her from pawing at her eye and some ointment to apply directly on the eye twice a day for week (which, let me tell you, is no easy feat).
WVH (located on 3rd in south town Corvallis) was wonderful, and I would happily recommend them for any pet emergency you may have after usual vet hours. They were very nice and helpful. They even called and let our regular vet know that we had been there. They called me this morning and we have a followup appointment with our usual vet at Corvallis Cat Clinic on Friday.
Matt's been calling Mochi by some new nicknames since she this happened - mainly Winky and Umbrella Cat. Poor Mochi. You can see her patheticness for yourself:
She's not looking too squinty here, but that's because she was curious about what I was doing.
Sad kitty cry.
She's also been sleeping a lot, and super extra affectionate. I'm sure the pain is tiring.