Additional Resources Ocular Hypertension Treatment Study (OHTS); www.nei.nih.gov/neitrials/static/study24.asp Collaborative Normal-Tension Glaucoma Study Group. Comparison of glaucomatous progression between untreated patients with normal-tension glaucoma and patients with therapeutically reduced intraocular pressures. Am J Ophthalmol 1998;126:487–97. Drance SM. The Collaborative Normal-Tension Glaucoma Study and some of its lessons. Can J Ophthalmol 1999:34:1-6. Drance S et al. Risk factors for progression of visual field abnormalities in normal-tension glaucoma. Am J Ophthalmol 2001;131:699-708. Anderson DR et al. Natural history of normal-tension glaucoma. Ophthalmology 2001;108:247-53. Anderson DR et al. Factors that predict the benefit of lowering intraocular pressure in normal-tension glaucoma. Am J Ophthalmol 2003;136:820-9. Early Manifest Glaucoma Trial (EMGT): www.nei.nih.gov/neitrials/static/study31.asp Advanced Glaucoma Intervention Study (AGIS): www.nei.nih.gov/neitrials/static/study49.asp Collaborative Initial Glaucoma Treatment Study (CIGTS): www.nei.nih.gov/neitrials/static/study50.asp The effectiveness of Early Lens Extraction with intraocular lens implantation for the treatment of primary Angle-closure Glaucoma (EAGLE) Study: Azuara-Blanco A et al. The effectiveness of Early Lens Extraction with intraocular lens implantation for the treatment of primary Angle-closure Glaucoma (EAGLE): study protocol for a randomized controlled trial. Trials 2011;12:133-43 www.trialsjournal.com/content/12/1/133 Garway-Heath DF et al. The United Kingdom Glaucoma Treatment Study: a multicentre, randomized, placebo-controlled clinical trial: design and methodology. Ophthalmology 2013;120:68-76. The Blue Mountains Eye Study; www.cvr.org.au/bmes.htm Leske MC et al. The Barbados Eye Study: prevalence of open angle glaucoma. Arch Ophthalmol 1994:112;821-9. Tielsch JM et al. A population-based evaluation of glaucoma screening: The Baltimore Eye Study. Am J Epidemiol 1991;134:1102-10. Tielsch JM et al. Racial variations in the prevalence of primary open-angle glaucoma: The Baltimore Eye Study. JAMA 1991;226:369-74. Tielsch JM et al. Family history and risk of primary open angle glaucoma: The Baltimore Eye Study. Arch Ophthalmol 1994;112:69-73. Sommer A. Glaucoma risk factors observed in the Baltimore Eye Survey. Curr Opin Ophthalmol 1996;7:93-8. Dielmans I et al. The prevalence of primary open angle glaucoma in a population-based study in the Netherlands: the Rotterdam Study. Ophthalmology 1994;101:1851-5. Suzuki Y et al. Risk factors for open-angle glaucoma in a Japanese population: the Tajimi study. Ophthalmology 2006;113:1613-17. References relating to PACG: Alsbirk PH. Primary angle-closure glaucoma: oculometry, epidemiology, and genetics in a high risk population. Acta Ophthalmol 1976; 54:5-31. Bonomi L et al. Epidemiology of angle-closure glaucoma. Prevalence, clinical types, and association with peripheral anterior chamber depth in the EgnaNeumarkt Glaucoma Study. Ophthalmology 2000; 107: 998-1003. Buhrmann RR et al. The prevalence of glaucoma in a rural east African population. Invest Ophthalmol Vis Sci 2000;41:40-48. Dandona L et al. Angle-closure glaucoma in an urban population in southern India. The Andhra Pradesh Eye Disease Study. Ophthalmology 2000;107:171016. Foster PJ et al. The prevalence of glaucoma in Chinese residents of Singapore. Arch Ophthalmol 2000;118:1105-11. He M et al. Prevalence and clinical characteristics of glaucoma in adult Chinese: a population-based study in Liwan District, Guangzhou. Invest Ophthalmol Vis Sci 2006; 47:2782-88. Lavanya R et al. Determinants of angle closure in older Singaporeans. Arch Ophthalmol 2008;126:686-91. Lam DS et al. Current approaches to the management of acute primary angle closure. Curr Opin Ophthalmol 2007;18:146-51. Patient support: www.glaucoma-association.com Professional guidelines: www.one.aao.org/guidelines-browse Primary Open-Angle Glaucoma Preferred Practice Patterns - October 2010 (and Summary Benchmarks - 2012) Primary Angle Closure Glaucoma Preferred Practice Patterns - October 2010 (and Summary Benchmarks - 2012) David Broadway October 2013