1. Available from: http://www.nhs.uk/conditions/glaucoma/pages/introduction.aspx. [Last accessed on 2016 Aug 09].
2. Glaucoma: Diagnosis and management. NICE guidelines (CG85). Available from: https://www.nice.org.uk/guidance/scg85?unlid=7812309582016218213038. [Last accessed on 2016 Aug 09].