%0 Journal Article %A A. Foster %A G. Johnson %T Blindness in the developing world. %D 1993 %R 10.1136/bjo.77.7.398 %J British Journal of Ophthalmology %P 398-399 %V 77 %N 7 %U https://bjo.bmj.com/content/bjophthalmol/77/7/398.full.pdf