OK - latest info
Been for post-op this morning, saw the same Nurse Practitioner who measured my eyes for the lens back in the summer.
Everything is going as expected (and I'm happy with it anyway), so he's discharged me. I will get a letter arranging an appointment with the Hospital Optician, probably six weeks or so when the eye has fully settled down. I'm happy with that - saves me paying to go and see an Optician
Anyway, he rememebered me from before, and he's a nice guy (no idea what his name is, he's Black African, and it seemed more a random collection of letters than anything else) so I mentioned the second op was more painful then the first.
So he explained that my left eye was severely astigmatic, and that in order to reduce it they insert the lens from the top rather than the side, and that this tends to be more painful and difficult than inserting from the side. I also asked about the injection in the eye at the end, and that's apparently anti-biotics, which they do after all cataract operations - presumably with the previous op been numbed by an injection, I just didn't feel the later one (I did feel the original numbing injection though).
So, all going well, really happy