Samson and Michael: thanks! Yes - she is cute, even when she's crook.
Experience is a great teacher. Last time, we let it go for too long, attempting to heal it with a series of different antibiotic ointments. Even the vet didn't fully recognise what was happening. I don't blame him, though, as they have to be masters of all animals and all breeds. And this does seem to be more of a problem for certain breeds of dogs.
But as soon as the veterinary opthalmologist saw her walk in the door, he said "I know exactly what is wrong here, even without examining her." which I initially thought was a wee bit of a stretch.
But he was dead right! Aaaand a LOT more expensive than the vet. Who seems to have learnt a lot in the meantime about the condition. Admittedly, the job was more difficult to deal with than it might have been had it been recognised earlier, but she recovered fully with no scarring etc.
Now the nervous bit is waiting the ten days until the buttons come off!