Hello and welcome to the forum. Corneal ring implants (Intacs or Ferrara Rings) have been around for quite a few years now, though how much they are used in the NHS seems to vary a lot from one hospital to another and between specialists. Intacs don't stop KC progressing so since corneal crosslinking (CXL) which does stop progression became available, they're probably used less, although they do improve vision for some people. But they don't work for everybody, and around 10% are removed because they cause problems. Have a look at Mr Damian Lake's article in the Winter 2018 newsletter - he suggests some other reasons why some corneal specialists don't use them.
https://www.keratoconus-group.org.uk/in ... wsletters/If you'd like a copy of our information booklet on keratoconus (written for us by specialists at Moorfields Eye Hospital) just e-mail your postal address to
anne@keratoconus-group.org.uk Are you being monitored for eligibility for CXL? And do you now have your contact lens referral?