Night blindness in preschool-aged children, by country

Data from surveys and regression-based estimates, prepared by the World Health Organization.

GDP: gross domestic product.

Reprinted from: World Health Organization Global Database on Vitamin A Deficiency, Global prevalence of vitamin A deficiency in populations at risk, 1995-2005. Available at: http://apps.who.int/iris/bitstream/handle/10665/44110/9789241598019_eng.pdf (Accessed November 14, 2021).

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