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Laser peripheral iridotomy

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https://www.readbyqxmd.com/read/29151687/medium-term-anatomical-results-of-laser-peripheral-iridoplasty-an-anterior-segment-optical-coherence-tomography-study
#1
Joobin Hooshmand, James Cy Leong, Jeremy O'Connor, Ghee S Ang, Anthony P Wells
Aim: To 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 methods: This 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)...
September 2017: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/29151682/anterior-segment-morphology-in-primary-angle-closure-glaucoma-using-ultrasound-biomicroscopy
#2
Tarannum Mansoori, Nagalla Balakrishna
Aim: To evaluate the configuration of the anterior chamber angle quantitatively and study the morphological changes in the eye with ultrasound biomicroscopy (UBM) in primary angle closure glaucoma (PACG) patients after laser peripheral iridotomy (LPI). Materials and methods: A total of 185 eyes of 185 PACG patients post-LPI and 126 eyes of 126 normal subjects were included in this prospective study. All subjects underwent complete ophthalmic evaluation, A-scan biometry, and UBM...
September 2017: Journal of Current Glaucoma Practice
https://www.readbyqxmd.com/read/29130529/anterior-segment-morphology-after-laser-iridotomy-in-primary-angle-closure-suspects
#3
Tarannum Mansoori, Nagalla Balakrishna
PURPOSE: To evaluate and compare the changes in anterior segment parameters in primary angle closure suspects before and after laser peripheral iridotomy and intrasession repeatability of measurements before laser iridotomy as assessed by Scheimpflug-Placido disc topographer. METHODS: Before laser iridotomy, 56 eyes of 56 primary angle closure suspect patients underwent anterior segment analysis with the Sirius Scheimpflug-Placido disc topographer system using glaucoma analysis mode, which was repeated a week after iridotomy...
November 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/29119030/latanoprost-induced-iris-pigment-epithelial-and-ciliary-body-cyst-formation-in-hypermetropic-eyes
#4
Abhijit Anand Mohite, Rangarajan V Prabhu, Thomas Ressiniotis
Purpose: Latanoprost has become one of the most widely prescribed topical antihypertensive medications in recent years. Yet there have been few reports of secondary iris pigment epithelial (IPE) and ciliary body (CB) cyst formation to date and none, to our knowledge, reported in eyes predisposed to primary angle closure. Methods: We report the first documented case of bilateral IPE and CB cysts in a hypermetropic patient with prior laser peripheral iridotomies (LPIs) as a rare, delayed side effect of topical Latanoprost treatment...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29096997/comparison-of-new-visual-disturbances-after-superior-versus-nasal-temporal-laser-peripheral-iridotomy-a-prospective-randomized-trial
#5
Kavitha Srinivasan, Nazlee Zebardast, Palaniswamy Krishnamurthy, Mohideen Abdul Kader, Ganesh V Raman, Sharmila Rajendrababu, Rengaraj Venkatesh, Pradeep Y Ramulu
PURPOSE: To determine whether laser peripheral iridotomy (LPI) location affects postoperative dysphotopsia symptoms. DESIGN: Multicenter, randomized, prospective, single-masked trial. PARTICIPANTS: Five hundred fifty-nine South Indian patients 30 years of age or older diagnosed as primary angle-closure suspects (PACSs) or with primary angle closure (PAC) or primary angle-closure glaucoma (PACG) in both eyes. METHODS: Patients were randomized to either bilateral superior or bilateral nasal/temporal LPI...
October 30, 2017: Ophthalmology
https://www.readbyqxmd.com/read/29082039/laser-peripheral-iridotomy-versus-trabeculectomy-as-an-initial-treatment-for-primary-angle-closure-glaucoma
#6
Yan Yun Chen, Su Jie Fan, Yuan Bo Liang, Shi Song Rong, Hai Lin Meng, Xing Wang, Ravi Thomas, Ning Li Wang
PURPOSE: To compare laser peripheral iridotomy (LPI) with trabeculectomy as an initial treatment for primary angle-closure glaucoma (PACG) with peripheral anterior synechiae (PAS) ≥ 6 clock hours. METHODS: Patients were drawn from two randomized controlled trials. 38 eyes of 38 patients (PAS ≥ 6 clock hours) were treated with LPI (group 1) while 111 eyes of 111 PACG patients (PAS ≥ 6 clock hours) underwent primary trabeculectomy (group 2). All patients underwent a comprehensive ophthalmic examination at baseline and at postoperative visits and were followed up for a minimum of one year...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29081648/resident-performed-laser-peripheral-iridotomy-in-primary-angle-closure-primary-angle-closure-suspects-and-primary-angle-closure-glaucoma
#7
Jason P Kam, Emily M Zepeda, Leona Ding, Joanne C Wen
PURPOSE: To investigate the power use and complication frequency of resident-performed laser peripheral iridotomy (LPI). METHODS: A retrospective analysis of 196 eyes from 103 patients who underwent neodymium: yttrium-aluminum-garnet laser iridotomy performed by resident physicians from January 1, 2010 through April 30, 2015 at a university-based county hospital was done. All patients were treated for primary angle closure, primary angle closure suspects, and primary angle closure glaucoma...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29077625/chronic-and-intermittent-angle-closure-caused-by-in-the-bag-capsular-tension-ring-and-intraocular-lens-dislocation-in-patients-with-pseudoexfoliation-syndrome
#8
Frank Bochmann, Jörg Strümer
PURPOSE: A subluxation or dislocation of the intraocular lens (IOL) is a well-known complication after cataract surgery in patients with pseudoexfoliation syndrome (PEX). Capsular tension rings (CTR) are frequently used to prevent postoperative complications caused by zonular weakness. Here we present a series of 7 cases, 2 with intermittent and 5 with acute angle closure caused by a combination of PEX-associated zonular weakness and a resulting unstable capsular bag-CTR-IOL complex. MATERIALS AND METHODS: We describe the typical clinical course with elevated intraocular pressure, myopic shift, and shallowing of the anterior chamber in 7 patients with a new type of secondary angle closure...
November 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29050926/-role-of-laser-peripheral-iridotomy-in-pigmentary-glaucoma-and-pigment-dispersion-syndrome-a-review-of-the-literature-french-version
#9
REVIEW
J Buffault, B Leray, A Bouillot, C Baudouin, A Labbé
PURPOSE: Pigment dispersion syndrome (PSD) is characterized by a structural abnormality of the posterior surface of the iris causing contact with the zonular fibers. It can lead to an open-angle glaucoma secondary to pigment dispersion into the trabecular meshwork. Laser peripheral iridotomy (PI) has been proposed as a treatment for pigmentary glaucoma (PG) and pigment dispersion syndrome (PDS) by reducing the dispersion of pigment. The goal of this review was to assess the effects of PI for PSD and PG...
October 16, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29035183/atypical-presentation-of-acute-angle-closure-glaucoma-in-maroteaux-lamy-mucopolysaccharidosis-with-patent-prophylactic-laser-peripheral-iridotomy-a-case-report
#10
Malini Veerappan, Garrick Chak, Christine Shieh, Pratap Challa
INTRODUCTION: Maroteaux-Lamy syndrome (MLS) is a rare progressive condition characterized by inflammation and scarring of multiple organs. Ocular complications caused by anterior segment abnormalities commonly cause visual impairment in MLS. Angle-closure glaucoma is one such complication, but there are limited data on presentation, workup, and management of this condition. CASE PRESENTATION: This case report describes an atypical presentation of acute angle-closure glaucoma in a patient with MLS despite a prior prophylactic laser peripheral iridotomy-which would typically prevent an acute angle-closure attack-that was patent and intact at the time of angle closure...
2017: Permanente Journal
https://www.readbyqxmd.com/read/29030369/post-laser-assisted-in-situ-keratomileusis-keratomycotic-malignant-glaucoma
#11
Pranita Sahay, Prafulla Kumar Maharana, Namrata Sharma, Jeewan S Titiyal
We report a case of a 24-year-old male patient with post-laser assisted in situ keratomileusis (LASIK) culture-proven mycotic keratitis who developed pupillary block glaucoma on day 19 of medical management. The case was initially managed with multiple Nd-Yag peripheral iridotomy along with systemic and topical antiglaucoma medications. However, an emergency therapeutic penetrating keratoplasty (TPK) with lens extraction was done in view of persistently raised intraocular pressure (IOP) and seclusio pupillae...
October 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28987446/role-of-laser-peripheral-iridotomy-in-pigmentary-glaucoma-and-pigment-dispersion-syndrome-a-review-of-the-literature
#12
REVIEW
A Labbé, J Buffault, B Leray, A Bouillot, C Baudouin
PURPOSE: Pigment dispersion syndrome (PDS) is characterized by a structural abnormality of the posterior surface of the iris causing contact with the zonular fibers. It can lead to an open-angle glaucoma secondary to pigment dispersion into the trabecular meshwork. Laser peripheral iridotomy (PI) has been proposed as a treatment for pigmentary glaucoma (PG) and pigment dispersion syndrome (PDS) by reducing the dispersion of pigment. The goal of this review was to assess the effects of PI for PDS and PG...
November 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28986594/plateau-iris-distribution-across-anterior-segment-optical-coherence-tomography-defined-subgroups-of-subjects-with-primary-angle-closure-glaucoma
#13
Sushma Verma, Monisha E Nongpiur, Hnin H Oo, Eray Atalay, David Goh, Tina T Wong, Shamira A Perera, Tin Aung
Purpose: We previously identified three distinct subgroups of patients with primary angle closure glaucoma (PACG) based on anterior segment optical coherence tomography (ASOCT) imaging. Group 1 was characterized by a large iris area with deepest anterior chambers, group 2 by a large lens vault (LV) and shallow anterior chamber depth (ACD), and group 3 displayed intermediate values across iris area, LV, and ACD. The purpose of the present study was to determine the distribution of plateau iris in these subgroups using ultrasound biomicroscopy (UBM) features...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28978593/asymmetric-glaucoma-in-pseudoplateau-iris-syndrome
#14
John S Swogger, Shelly G Jain, Andrea K Sawchyn, Gloria P Fleming
A 39-year-old Caucasian man with bilateral narrow angles, a plateau-like iris configuration on gonioscopy and elevated intraocular pressure (IOP) presented with significant asymmetric glaucoma, left eye affected more than right. Initial management with topical medical therapy, laser iridoplasty and peripheral iridotomy in the left eye was ineffective in lowering the IOP or opening the anterior chamber angle. Ultrasound biomicroscopy demonstrated bilateral ciliary body cysts. The patient ultimately required surgical management, consisting of cataract extraction and endoscopic cyclophotocoagulation of ciliary body cysts in the left eye and trabeculectomy in the right eye, for persistent IOP control to prevent further optic nerve damage and subsequent visual field loss...
October 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28937506/role-of-lens-extraction-and-laser-peripheral-iridotomy-in-treatment-of-glaucoma
#15
Sara Pose-Bazarra, Augusto Azuara-Blanco
PURPOSE OF REVIEW: Lens extraction in people with coexisting cataract and open angle glaucoma is associated with a reduction in intraocular pressure (IOP). In primary angle-closure glaucoma (PACG), lens extraction and laser peripheral iridotomy (LPI) can be used to open the anterior chamber angle, increase the outflow through the trabecular meshwork and reduce the IOP. The present review will summarize the recent available literature regarding the role of both interventions for the treatment of glaucoma...
September 20, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28887673/-intraocular-pressure-after-implantation-of-an-icl-with-aquaport-development-of-intraocular-pressure-after-implantation-of-an-icl-model-v4c-with-aquaport-without-iridotomy
#16
B Repplinger, T Kohnen
BACKGROUND AND OBJECTIVE: The latest version of the intraocular lens (ICL V4c) has a central hole (aquaport) that avoids a pupillary block. Due to this laser iridotomy or intraoperative surgical peripheral iridectomy are no longer required. In this study, we examined the intraocular pressure (IOP) after implantation of the ICL with aquaport, with special reference to the development of a possible pupillary block glaucoma. MATERIAL AND METHODS: This retrospective non-randomized study included 87 eyes from 46 patients (consecutive case series)...
September 8, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28887116/residual-angle-closure-one-year-after-laser-peripheral-iridotomy-in-primary-angle-closure-suspects
#17
RANDOMIZED CONTROLLED TRIAL
Mani Baskaran, Elizabeth Yang, Sameer Trikha, Rajesh S Kumar, Hon Tym Wong, Mingguang He, Paul T K Chew, Paul J Foster, David Friedman, Tin Aung
PURPOSE: To determine the incidence and baseline clinical and anterior segment optical coherence tomography (AS-OCT) predictors associated with residual angle closure as assessed by gonioscopy 1 year after laser peripheral iridotomy (LPI) in primary angle closure suspects (PACS). DESIGN: Subanalysis of randomized controlled trial data. METHODS: AS-OCT images from 181 PACS subjects ≥50 years of age were analyzed using customized software before and 1 year after LPI...
November 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28885674/the-outcome-of-transscleral-cyclophotocoagulation-for-the-management-of-acute-angle-closure
#18
Patrick J Chiam, Velota C T Sung
PURPOSE: To investigate the outcome of transscleral cyclophotocoagulation (TCP) in the treatment of acute angle closure (AAC) refractory to medical treatment. METHODS: This is a retrospective interventional case series. The inclusion criteria include patients diagnosed with AAC who had TCP. Pre-TCP and post-TCP intraocular pressure (IOP), visual acuity, and AAC treatment were analyzed. The complications and the results of subsequent treatments including lens extraction if performed were also assessed...
September 7, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28860528/pupillary-responses-to-light-are-not-affected-by-narrow-irido-corneal-angles
#19
A V Rukmini, Raymond P Najjar, Eray Atalay, Sourabh Sharma, Jing Zhan Lock, Mani Baskaran, Monisha Nongpiur, Joshua J Gooley, Tin Aung, Dan Milea
Chromatic pupillometry is an emerging method for evaluating ocular health that relies upon the differential stimulation of rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs). Although it has been investigated in conditions affecting the outer or inner retina, there is a paucity of studies in conditions where the anterior chamber of the eye is affected. Primary angle closure suspects (PACS) are defined as eyes with narrow anterior chamber angles and intact retina. PACS patients are at risk of developing primary angle closure glaucoma and are prophylactically treated by performing laser peripheral iridotomy (LPI)...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28858958/chronic-uveitis-following-neodymium-doped-yttrium-aluminum-garnet-laser-peripheral-iridotomy
#20
Amro Ali, Cyril Rosenfeld, Eric Rosenberg, Sansar Sharma, Thaddeus L Wandel
PURPOSE: Assessment of a chronic uveitis entity in nonuveitic patients following neodymium-doped yttrium aluminum garnet (Nd:YAG) laser peripheral iridotomy. METHODS: A 7-year retrospective observational case series of 5 patients that developed chronic uveitis following a Nd:YAG laser peripheral iridotomy treatment. RESULTS: Five eyes of 5 nonconsecutive patients had developed chronic anterior uveitis lasting >12 weeks. Four patients were female, with a mean age of 60...
October 2017: Journal of Glaucoma
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