The eyesight requirements are all on the CAA's website. An optician can explain the terms. This topic has been extensively covered on PPRuNe - run a search.
Good luck,
V1R
P.S. Mods: would a sticky thread with links to CAA/FAA requirements and a few brief pointers on eyesight to new users be worth putting up?
........Ooops, looks like there already is! Ignore me
