RT Journal Article SR Electronic T1 Socioeconomic status and blindness JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 1484 OP 1488 DO 10.1136/bjo.85.12.1484 VO 85 IS 12 A1 Dandona, Rakhi A1 Dandona, Lalit YR 2001 UL http://bjo.bmj.com/content/85/12/1484.abstract AB