But why do you want to work in Italy??! This is a !!!! place to fly and the airlines as well.
Anyway regarding FAA requirements, you will find everything you need on website.
Regarding limits in UK look at follow:
http://www.caa.co.uk/default.aspx?ca...=90&pageid=531
other usefull info are here:
http://www.caa.co.uk/default.aspx?ca...=90&pageid=534
"JAR Class 1
The initial refractive error (correction) limit is +5/-6 dioptres. There is no myopic limit for revalidation/renewal. The astigmatism (distortion) and anisometropia (difference between the eyes) initial limits are 2 dioptres, but there are no limits for revalidation/renewal.
NOTE: contact lenses must be worn if the anisometropia exceeds 3 dioptres."
PS: If you hold a FAA CPL, it's not their roule to apply renewal limit....BUT....
They are more free to examine you carefully and apply at their own discretion the limits of renewal. And 90% they will try to meet your need.
Without cpl FAA (icao) instead, they shall scrupulously keep the limits for initial.