Abstract

AimTo evaluate by anterior segment optical coherence tomography (AS-OCT) the medium-term (mean duration 3.2 years) anatomical changes in the anterior chamber angle (ACA) after laser peripheral iridoplasty.Materials and methodsThis is a longitudinal, retrospective case series of 31 eyes of 31 patients with primary angle-closure suspicion, primary angle closure (PAC), or primary angle-closure glaucoma (PACG) who underwent laser peripheral iridoplasty. All patients had persistent iridotrabecular contact (ITC) despite the presence of a patent peripheral iridotomy (PI). An AS-OCT was performed in dark conditions before and after laser iridoplasty. Quadrants of ITC, intraocular pressure (IOP), and the AS-OCT parameters of the temporal and nasal ACAs were measured and analyzed.ResultsPrior to iridoplasty, the average number of quadrants of ITC was 3.3. At the first postiridoplasty visit (mean duration 6.8 weeks), this reduced to 1.7 quadrants but increased to 1.9 by the final follow-up visit (mean duration 3.2 years). Twenty-five patients (80.1%) had less ITC at the first postlaser visit increasing to 27 (87.1%) patients by the final visit. Two (6.5%) required a second iridoplasty, while 3 (9.7%) required cataract surgery. All parameters of angle width showed a statistically significant increase in magnitude. All patients maintained IOP ≥ 21 mm Hg throughout the follow-up period.ConclusionIridoplasty is a useful adjunct in widening the ACA, particularly in those with persistent angle closure after iridotomy but with no cataract. While not successful in all patients, it can act as a temporizing measure to widen the drainage angle until such time that cataract surgery can be performed.Clinical significanceLaser peripheral iridoplasty can be used as an adjunct in angle-closure glaucoma patients with no cataract.How to cite this article: Hooshmand J, Leong JCY, O’Connor J, Ang GS, Wells AP. Medium-term Anatomical Results of Laser Peripheral Iridoplasty: An Anterior Segment Optical Coherence Tomography Study. J Curr Glaucoma Pract 2017;11(3):113-119.

Highlights

  • Glaucoma is the leading cause of irreversible blindness worldwide.[1]

  • At the first postiridoplasty visit, this reduced to 1.7 quadrants but increased to 1.9 by the final follow-up visit

  • Iridoplasty is a useful adjunct in widening the anterior chamber angle (ACA), in those with persistent angle closure after iridotomy but with no cataract

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Summary

Introduction

Glaucoma is the leading cause of irreversible blindness worldwide.[1]. Despite its lower prevalence in comparison with primary open-angle glaucoma, PACG is responsible for a disproportionately large share of the visual morbidity attributable to glaucoma in Asian populations.[2]. Current evidence suggests that iridoplasty is a useful adjunctive treatment tool for angle closure.[10]

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