1. Management of cataract in primary health care services. World Health Organization, Geneva. 1990: 1.
2. Gorin G. History of Ophthalmology. Delaware: Publish or Perish Inc. 1982: 1?164.
3. Al-Mawsili AA. In: Kalji MR, Wafai MZ (eds) Kitab Al-Muntakhab Fi'ilm Al-Ayn. Riyadh: Al-Obeikan Publishers, pp 85?98, 1992.
4. World Health Organization. Report of the international meeting on the management of cataract within primary health care systems. Denpasar, 15?19 December 1986; WHO/PBL/87.13.
5. World Health Organization. Report of WHO consultation on the use of intraocular lenses in cataract surgery in developing countries. Geneva, 3?7 December 1990; WHO/ PBL/91.1.