Glaucoma diagnosis and referrals have seen great enhancements from the development of referral refinement schemes. We talk to Amanda Harding, principal optometrist at Manchester Royal Eye Hospital, to get some clarification on the different referral filtering services in the UK. We also go back to Glasgow to hear from Kathy Morrison about how the Scottish Intercollegiate Guidelines Network (SIGN) guidelines have been implemented since the last referrals programme.