RT Journal Article SR Electronic T1 Gonioscopic changes after glaucoma surgery. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 561 OP 567 DO 10.1136/bjo.53.8.561 VO 53 IS 8 A1 Sollom, A W YR 1969 UL http://bjo.bmj.com/content/53/8/561.abstract AB