RT Journal Article SR Electronic T1 BASIL THORN LANG, M.A., B.Ch.Cantab., F.R.C.S.Eng JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 169 OP 171 DO 10.1136/bjo.12.3.169-a VO 12 IS 3 YR 1928 UL http://bjo.bmj.com/content/12/3/169.2.abstract AB