1. 1. Bourne RR, Steinmetz JD, Flaxman S, et al. Trends in prevalence of blindness and distance and near vision impairment over 30 years: an analysis for the Global Burden of Disease Study. Lancet Glob Health. 2021;9(2):e130-e143. doi:10.1016/S2214-109X(20)30425-3
2. 2. World Health Organization. World Report on Vision. 2019. Accessed December 25, 2021. https://www.who.int/publications-detail/world-report-on-vision
3. 3. Bashshur R, DeMarco M. A review of corneal blindness data from the Rapid Assessment of Avoidable Blindness (RAAB) Repository. Int J Eye Bank. 2020;8(1):1-8.
4. 4. Gain P, Jullienne R, He Z, et al. Global survey of corneal transplantation and eye banking. JAMA Ophthalmol. 2016;134(2):167-173. doi:10.1001/jamaophthalmol.2015.4776
5. 5. Wong KH, Kam KW, Chen LJ, Young AL. Corneal blindness and current major treatment concern: graft scarcity. Int J Ophthalmol. 2017;10(7):1154-1162. doi:10.18240/ijo.2017.07.21