RT Journal Article SR Electronic T1 Blindness in schoolchildren: importance of heredity, congenital cataract, and prematurity JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 578 OP 584 DO 10.1136/bjo.71.8.578 VO 71 IS 8 A1 Phillips, Calbert I A1 Levy, Anthony M A1 Newton, Marjorie A1 Stokoe, N Leslie YR 1987 UL http://bjo.bmj.com/content/71/8/578.abstract AB