From my direct experience, the CAA are open to the idea (and have been trying for some time) of going down the route of the FAA in that there is no limit to the amount of eyesight correction you need so long as corrective lenses bring your vision to a high standard. However, we are in an EASA world and its the other countries like France and Germany that continue to block the UK CAA's moves on this subject.
Our only hope is to watch this space and hope the other Europeans see sense, pardon the pun