One guinea pig has had a problem with one eye for over a week. The thing is that she can't close it (she doesn't blink), which is why she has defects on her cornea as a result of mechanical damage. The pig is given eye drops as recommended by the vet, the cornea has practically healed, but it still cannot move its eyelids. When you bring your finger towards the eye, the guinea pig moves its head back instead of squinting. I don't know exactly what it could be and how to treat it?