India is the first country to have launched a National Program for Control of Blindness. Due to the increasing prevalence of cataract related blindness, in 1994, the Wrold Bank provided a soft loan to the Government of India for the implementation of the Cataract Blindness Control Program in the seven states in the country which had the highest prevalence of cataract blindness. the program turned out to be one of the most cost effective health interventions ever supported by the World Bank.