RT Journal Article SR Electronic T1 ABSTRACTS JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 114 OP 122 DO 10.1136/bjo.19.2.114 VO 19 IS 2 YR 1935 UL http://bjo.bmj.com/content/19/2/114.abstract AB