RT Journal Article SR Electronic T1 THE RIDLEY LENS IMPLANT JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 368 OP 376 DO 10.1136/bjo.41.6.368 VO 41 IS 6 A1 Edward Epstein YR 1957 UL http://bjo.bmj.com/content/41/6/368.abstract AB