Prevalence and causes of vision loss in sub-Saharan Africa: 1990-2010.

Naidoo K, Gichuhi S, Basanez MG, Flaxman SR, Jonas JB, Keeffe J, Leasher JL, Pesudovs K, Price H, Smith JL, Turner HC, White RA, Wong TY, Resnikoff S, Taylor HR, Bourne RR