One final update on progress:
I visited the CAA and gained my Class 1 medical certificate today! The only disadvantage was that I have a glasses restriction slapped on, which was odd since an eye test 2 months ago showed 6/5 in each eye. However, another opthalmologist there said that the prescription was so small it was worth visiting a high street optician for a further test in the event it was a one-off... I was pretty tired this morning which might explain it. Apparently if that shows my vision as normal I can send a written report in to the CAA and get the restriction removed.