Cataract and “Vision 2020—the right to sight” initiative

In 1999 the World Health Organization and the International Agency for Prevention of Blindness announced a joint programme to eliminate unnecessary blindness. The programme is called "Vision 2020-the right to sight". 1 Key to this initiative is the provision of suYcient, successful, and sustainable cataract services for all communities. The questions that therefore arise include: what is a suYcient; what is a successful; and what is a sustainable cataract service? 2 Two articles in this issue of the BJO from Korea 3 and Nepal 4 evaluate cataract services using a variety of performance indicators-cataract surgical coverage, barriers to access, and outcome of surgery.