title: Measuring the impact of cataract services in the community.
authors: Lecturer: International Centre for Evidence in Disability Group, London School of Hygiene and Tropical Medicine, London, UK. sarah.polack@Lshtm.ac.uk.
authors: Sarah
authors: S
authors: Polack
authors: Co-director: International Centre for Evidence in Disability Group, London School of Hygiene and Tropical Medicine, London, UK. hannah.kuper@Lshtm.ac.uk.
authors: Hannah
authors: H
authors: Kuper