1. Data on blindness;Maitchouk;Vision,1982
2. Two WHO targets: trachoma and cataract;Maitchouk;Wld Hlth,1983
3. Social and economic barriers to cataract surgery in rural south India. A preliminary report;Venkataswamy;Visual Impairment and Blindness,1981
4. Ophthalmology;Newell,1978
5. Resistance to Cataract Surgery;Miller,1964