Thanks for asking after Teddy.
Vet seems happy that it IS an ulcerated cornea only, and has explained that it may take several weeks to heal, during which time we can expect the eye to look pretty horrid.
We're still having to give him drops 4-5 times a day, which is proving quite a challenge with a very wriggly cocker who's got wise to it!

Back in on Friday for another check up.