Article PubMed
The British journal of ophthalmology  (2002)

A population based eye survey of older adults in Tirunelveli district of south India: blindness, cataract surgery, and visual outcomes.

Nirmalan, P K; Thulasiraj, R D; Maneksha, V; Rahmathullah, R; Ramakrishnan, R; Padmavathi, A; Munoz, S R; Ellwein, L B