RT Journal Article SR Electronic T1 Walter Edmunds, M.Ch.Camb., F.R.C.S.Eng JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 650 OP 650 DO 10.1136/bjo.14.12.650 VO 14 IS 12 YR 1930 UL http://bjo.bmj.com/content/14/12/650.1.abstract AB