Thanks everyone.
There has been some improvement in the last few days. She can keep her food down now and her eyes are back to normal. Now we are dealing with the 'vertigo' dizziness and headtilt. We are camping downstairs and all the sharp edges in the room are covered with blankets (we do look scruffy but dont care) She is trying to deal with the room tilting when she walks but thanks to a harness I can keep her out of most dangers. Hope she is back toddling about soon as she is 14half and really needs to keep those legs strong. It seems to be a common ailment esp for older dogs but I'd never heard of it, and its been horrendous. Thanks for all your kind wishes they have been much appreciated.
k9 and Bess