title: Anterior Segment Optical Coherence Tomography Changes to the Anterior Chamber Angle in the Short-term following Laser Peripheral Iridoplasty.
abstract: OBJECTIVE
  To evaluate, by anterior segment optical coherence tomography (AS-OCT), the changes in the anterior chamber angle during the short-term postoperative period after diode laser peripheral iridoplasty (LPI).
  
  
  METHODS
  Retrospective, observational study of consecutive primary angle closure suspect, primary angle closure, or primary angle closure glaucoma patients who underwent LPI. These patients had persistent iridotrabecular contact despite the presence of a patent peripheral iridotomy. The AS-OCT images of the temporal and nasal anterior chamber angles in dark conditions before and after LPI were ana lyzed. The main outcome measures were changed in AS-OCT parameters such as trabecular-iris angle (TIA), angle opening distance (AOD), trabecular-iris space area (TISA), trabecular-iris contact length (TICL), iris thickness (IT), and maximum iris bow height (MIBH). Secondary outcome para meters included intraocular pressure (IOP) and postlaser complications.
  
  
  RESULTS
  Images of 14 eyes of 14 patients were assessed. The mean time from LPI to the follow-up AS-OCT scan was 6 ± 3 weeks. The IT did not alter significantly after LPI, but there were significant increases in the TIA, AOD and TISA, as well as a significant decrease in TICL and MIBH. There were no significant postlaser complications. There was a small decrease in mean IOP from 17.1 ± 4.0 mm Hg to 14.8 ± 4.6 mm Hg (p = 0.014).
  
  
  CONCLUSIONS
  Based on AS-OCT imaging, LPI resulted in significant angle widening and iris profile fattening during the short-term postoperative period in eyes with persistent angle closure despite the presence of a patent peripheral iridotomy. How to cite this article: Leong JCY, O'Connor J, Ang GS, Wells AP. Anterior Segment Optical Coherence Tomography Changes to the Anterior Chamber Angle in the Short-term following Laser Peripheral Iridoplasty. J Current Glau Prac 2014;8(1):1-6.
authors.affiliation: Registrar, Department of Ophthalmology, Capital and Coast District Health Board, New Zealand.
authors.forename: James Chiung
authors.initials: JC
authors.lastname: Yoong Leong
authors.affiliation: Glaucoma Fellow, Department of Ophthalmology, Royal Victoria Eye and Ear Institute, Australia.
authors.forename: Jeremy
authors.initials: J
authors.lastname: O'Connor
authors.affiliation: Consultant Ophthalmologist, Department of Ophthalmology, Royal Victoria Eye and Ear Institute, Australia.
authors.forename: Ghee
authors.initials: G
authors.lastname: Soon Ang
authors.affiliation: Consultant Ophthalmologist, Department of Ophthalmology, Capital Eye Specialists, New Zealand.
authors.forename: Anthony P
authors.initials: AP
authors.lastname: Wells
keywords: Angle closure glaucoma; Laser peripheral iridoplasty.; Optical coherence tomography