RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 652 OP 669 DO 10.1136/bjo.10.12.652 VO 10 IS 12 YR 1926 UL http://bjo.bmj.com/content/10/12/652.abstract AB