RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 302 OP 314 DO 10.1136/bjo.9.6.302 VO 9 IS 6 YR 1925 UL http://bjo.bmj.com/content/9/6/302.abstract AB