RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 329 OP 333 DO 10.1136/bjo.6.7.329 VO 6 IS 7 YR 1922 UL http://bjo.bmj.com/content/6/7/329.abstract AB