RT Journal Article SR Electronic T1 Are intraocular lenses the solution to cataract blindness in Africa? JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 469 OP 471 DO 10.1136/bjo.82.5.469 VO 82 IS 5 A1 YORSTON, DAVID YR 1998 UL http://bjo.bmj.com/content/82/5/469.abstract AB