%0 Journal Article %K General Medicine %K Vision impairment %K Blindness %B The Lancet Global Health %D 2021 %G eng %I Elsevier BV %N 2 %P e144-e160 %R 10.1016/s2214-109x(20)30489-7 %T Causes of blindness and vision impairment in 2020 and trends over 30 years, and prevalence of avoidable blindness in relation to VISION 2020: the Right to Sight: an analysis for the Global Burden of Disease Study %U https://www.thelancet.com/action/showPdf?pii=S2214-109X%2820%2930489-7 %V 9