College of Optometrists. Guidance for professional practice. Knowledge, skills and performance. Examining patients at risk from glaucoma [Accessed Jul 2020]

College of Optometrists & Royal College of Ophthalmologists - Guidelines for referral of glaucoma suspects

Click http://guidance.college-optometrists.org/guidance-contents/knowledge-skills-and-performance-domain/examining-patients-a/ link to open resource.