Update - Promise is pretty much signed off now, and her eye, although not back to itself (I don't suppose it ever will be) is looking pretty good. It was the left eye that had the surgery, and her right eye on the tear tape test was absolutely fine to start with, although the tear level started to drop off. So really we're now down to Optimmune in both eyes a.m. and p.m. plus drops three times a day.

The drops, incidentally, are something called Hyabak - which I have discovered are for human use for dry eye, and are available without prescription on the Internet in case anyone wants to try them.