RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 514 OP 527 DO 10.1136/bjo.3.11.514 VO 3 IS 11 YR 1919 UL http://bjo.bmj.com/content/3/11/514.abstract AB