The vet was happy that it is 'just' conjunctivitis, although I noticed in the waiting room, and she agreed with me, that the other eye is now in worse condition. The conjunctivitis has jumped to that one too!
So, the antibiotic pills continue until the weekend, and the drops go into both eyes until I take her back, hopefully for a final check, next Tuesday.
She's just wolfed down her late breakfast, and I'm going to unblock the cat flap, and let her out. I'm allowed to let her wander about, since weeping eyes aside, she's otherwise hale and hearty.
That cost a mere £80 or so, which is just under the insurance excess, unlike the retrobulbar abscess, which went well over the excess at the first visit (£200 or so, for the operation to drain the abscess, plus later pills and drops).