RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 30 OP 44 DO 10.1136/bjo.11.1.30 VO 11 IS 1 YR 1927 UL http://bjo.bmj.com/content/11/1/30.abstract AB