So, I went to see my friend the optician today and spent quite a long time there. He seems to think that I have a tear in my retina and it looks as though I may have some degradation in peripheral vision in my right eye.
I need to go back to see him again tomorrow to repeat some things and a few more bits and pieces and it sounds as though he's going to refer me back to the hospital.
Shame - I hoped he was going to say "give it a couple of days and you'll be as right as rain" (and, for a change, it's raining a lot today).
Oh yes, the police phoned during the week to tell me they'd done all they could in their investigation to find the chap that assaulted me but were now ceasing active investigation and the case would be kept on file.
Not good news for the next person he encounters.
EDIT:
It's now "tomorrow" .... I've been back to my optician friend and the news is much better.
He no longer thinks my retina is torn - he'd not seen a tear but pigment spots that often indicate it. He's read up more on this and thinks they are the result of the trauma my eye has been through.
The peripheral vision was checked again today and has checked out fine .... so it's now just waiting for the floaters in my eye to settle which should get rid of the fog and (hopefully) all will be well.
The other useful thing is that I've also come away with some contact lenses. I'd been thinking about them for some time as when the light is a bit poor I need to wear my glasses and on the bike they fog up almost instantly. The contacts should avoid this. I'll only pop them in when I need to for riding the bike (I seldom need glasses anyway) and for other situations I'll stick with the specs.
All in all a good optician visit !

“Scientists investigate that which already is. Engineers create that which has never been.”
-- Albert Einstein