1. Available data on blindness (update 1987). Geneva: World Health Organization, 1987. 23 p. (WHO/PBL/87.14). Unpublished.
2. Prost A, Vaugelade J. La surmortalité des aveugles en zone de savane ouest-africaine. Bulletin de l'Organisation mondiale de la Santé 1981; 59(5): 773?6.
3. Eighth General Programme of Work covering the period 1990?1995. Geneva: World Health Organization. Health for All' Series 1987; No. 10: p 209.
4. Blindness surveillance. September 1979. Reprinted from WHO Epidemiological Record.
5. Strategies for the prevention of blindness in national programmes - A primary health care approach. Geneva: World Health Organization, 1984; p 88.