RT Journal Article SR Electronic T1 Corrigendum JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 188 OP 188 DO 10.1136/bjo.25.4.188 VO 25 IS 4 YR 1941 UL http://bjo.bmj.com/content/25/4/188.abstract AB