RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 376 OP 389 DO 10.1136/bjo.4.8.376 VO 4 IS 8 YR 1920 UL http://bjo.bmj.com/content/4/8/376.abstract AB