The Lancet Global Health The Lancet global health The Lancet global health, Elsevier, 2021, 9 (2), pp.e130-e143. ⟨10.1016/s2214-109x(20)30425-3⟩ GBD 2019 Blindness and Vision Impairment Collaborators & Vision Loss Expert Group of the Global Burden of Disease Study 2021, ' Trends in prevalence of blindness and distance and near vision impairment over 30 years: an analysis for the Global Burden of Disease Study ', The Lancet Global Health, vol. 9, no. 2, pp. e130-e143 . https://doi.org/10.1016/S2214-109X(20)30425-3