Laser Peripheral Iridotomy With and Without Iridoplasty for Primary Angle-Closure Glaucoma: 1-Year Results of a Randomized Pilot Study

PurposeTo compare the efficacy and safety of laser peripheral iridotomy with or without laser peripheral iridoplasty in the treatment of eyes with synechial primary angle-closure or primary angle-closure glaucoma.DesignRandomized, controlled clinical trial.MethodsConsecutive patients older than 40 years with synechial primary angle-closure or primary angle closure glaucoma were recruited. Eligible patients were randomized to 1 of 2 treatment options, iridotomy or iridotomy plus iridoplasty, and were followed up for 1 year. Main outcome measures were intraocular pressure (IOP), peripheral anterior synechiae, corneal endothelial cell count, and complications.ResultsSeventy-seven eyes (77 patients) were randomized to the iridotomy group, and 81 eyes (81 patients) were randomized to the iridotomy plus iridoplasty group. Sixty-one patients (79.2%) in the iridotomy and 65 patients (80.2%) from the iridotomy plus iridoplasty groups completed 1 year of follow-up. There were no significant differences between the groups in the baseline data. IOP was reduced from 24.66 ± 13.76 mm Hg to 19.03 ± 6.21 mm Hg in the iridotomy group (P < .001) and from 27.96 ± 13.06 mm Hg to 20.45 ± 7.26 mm Hg in the iridotomy plus iridoplasty group (P < .001). Extent of peripheral anterior synechiae was decreased by 1 more clock-hour after iridoplasty compared with that after iridotomy in the iridotomy plus iridoplasty group (P < .001). There was no significant difference in IOP, medications, need for surgery, or visual function between groups at the 1-year visit.ConclusionsIn eyes with synechial primary angle-closure or primary angle-closure glaucoma, both iridotomy alone or combined with iridoplasty provide a significant and equivalent reduction in IOP. There is also a possible reduction in peripheral anterior synechiae, more so in the iridoplasty group.