RT Journal Article SR Electronic T1 Symposium on Ocular Therapy, vol 8 JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 841 OP 841 DO 10.1136/bjo.60.12.841 VO 60 IS 12 A1 P. D. Trevor-Roper YR 1976 UL http://bjo.bmj.com/content/60/12/841.1.abstract AB