slightly off topic but has anyone tried orthokeratology? You wear gas permeable contact lenses during the night which reshape your cornea, meaning you can see without lenses/glasses the next day.
I don't know what the CAA think of this, but some opticians seem to be marketing it towards pilots/people who need good stable vision and sports players who find contacts get in the way.
All sounds too good to be true I think, but I might ask my optometrist next time I go!