Eyes/Non-crusty Droopy lower eyelid

[Sarien]

We've had our piggies for a year now and I make sure to give them a once over everyday during lap time.
Well, today, I noticed one of my girls, Butters, had a droopy lower eyelid.
Here is her left eye, which looks normal.



Here is her right eye, which, as you can see, droops a little. It doesn't looked inflamed or red at all. My vet's office is closed right now, but I'll call tomorrow to set up an appointment. But for the moment, do any of you have any idea what could have caused this?

 

[Sarien]

Thank you spy9doc.
I already have an appointment on Tuesday with our vet. Hopefully it's nothing too serious.

 

[Paula]

I had a pig with pea eye and that's exactly how it looked in the beginning.