1. Quigley HA. Number of people with glaucoma worldwide. Br J Ophthalmol. 1996;80(5):389–393. doi:10.1136/bjo.80.5.389. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC505485/pdf/brjopthal00005-0009.pdf 2. Weinreb RN, Aung T, Medeiros FA. The pathophysiology and treatment of glaucoma: a review. JAMA. 2014;311(18):1901–1911. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4523637/pdf/nihms709852.pdf 3. Susanna R Jr, De Moraes CG, Cioffi GA, Ritch R. Why Do People (Still) Go Blind from Glaucoma?. Transl Vis Sci Technol. 2015;4(2):1. Published 2015 Mar 9. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4354096/pdf/i2164-2591-4-2-1.pdf 4. Tham YC, Li X, Wong TY, Quigley HA, Aung T, Cheng CY. Global prevalence of glaucoma and projections of glaucoma burden through 2040: a systematic review and meta-analysis. Ophthalmology. 2014;121(11):2081–2090. https://www.aaojournal.org/article/S0161-6420(14)00433-3/pdf 5. Casson R.J., Chidlow G., Wood J.P., et al. Definition of glaucoma: clinical and experimental concepts. Clin Exp Ophthalmol 2012; 40:341-349. https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1442-9071.2012.02773.x