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Laser peripheral iridotomy

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https://www.readbyqxmd.com/read/28203193/recurrent-uveal-effusion-after-laser-iridotomy
#1
Hiroshi Sakai, Michiko Yonahara, Miyako Sakai
A 59-year-old woman was seen by an ophthalmologist for blurred vision, ocular pain, headache, and nausea. She was diagnosed with acute primary angle closure (APAC) and successfully treated with medications. Using ultrasound biomicroscopy (UBM), engorged episcleral vein was observed and small uveal effusion was diagnosed after laser peripheral iridotomy (LPI). The uveal effusion disappeared and was again diagnosed by UBM together with anterior segment inflammation with ocular pain. Iritis caused by LPI after APAC might be a cause of uveal effusion in this specific case...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28141872/factors-associated-with-the-retinal-nerve-fiber-layer-loss-after-acute-primary-angle-closure-a-prospective-edi-oct-study
#2
Eun Ji Lee, Tae-Woo Kim, Kyoung Min Lee, Seung Hyen Lee, Hyunjoong Kim
PURPOSE: To determine the factors associated with retinal nerve fiber layer (RNFL) loss in eyes with acute primary angle-closure (APAC), particularly focusing on the influence of the change in the anterior lamina cribrosa surface depth (LCD). METHODS: After the initial presentation, 30 eyes with unilateral APAC were followed up at the following specific time points over a 12-month period: 1 week, 1~2 months, 2~3 months, 5~6 months, and 11~12 months. These follow-ups involved intraocular pressure measurements, enhanced depth-imaging spectral-domain optical coherence tomography (SD-OCT) scanning of the optic disc, and measurements of the circumpapillary RNFL thickness...
2017: PloS One
https://www.readbyqxmd.com/read/28112126/the-posterior-iris-claw-lens-outcome-study-6-month-follow-up
#3
Nana Madhukar Jare, Ashwini Ganesh Kesari, Salil S Gadkari, Madan D Deshpande
PURPOSE: The purpose of this study was to evaluate functional and anatomical outcomes of posterior iris-claw intraocular lens (IOL) implant for correction of aphakia in eyes with inadequate capsular support. MATERIALS AND METHODS: Prospective case series of 108 aphakic eyes with inadequate capsular support which underwent posterior iris-claw IOL with a 6-month follow-up period was conducted. The cases belonged to two clinical settings: elective secondary implantation and those with intraoperative posterior dislocation of cataractous lens or IOL...
December 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28060395/design-and-validation-of-a-training-simulator-for-laser-capsulotomy-peripheral-iridotomy-and-retinopexy
#4
Sarah M Simpson, Kelly D Schweitzer, Davin E Johnson
BACKGROUND AND OBJECTIVES: Ophthalmology trainees commonly learn laser procedures on live patients. A simulator for learning peripheral iridotomy (PI), posterior capsulotomy, and retinopexy may improve patient outcomes. MATERIALS AND METHODS: A model eye with artificial tissues was designed. The tissues reacted to laser similarly to human tissues. Inexperienced (n = 6; first- to third-year residents) and experienced (n = 7; fourth- to fifth-year residents and staff) ophthalmic personal were compared on performance of the above laser procedures...
January 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28039061/primary-angle-closure-glaucoma-what-we-know-and-what-we-don-t-know
#5
REVIEW
Xinghuai Sun, Yi Dai, Yuhong Chen, Dao-Yi Yu, Stephen J Cringle, Junyi Chen, Xiangmei Kong, Xiaolei Wang, Chunhui Jiang
Primary angle-closure glaucoma (PACG) is a common cause of blindness. Angle closure is a fundamental pathologic process in PAGC. With the development of imaging devices for the anterior segment of the eye, a better understanding of the pathogenesis of angle closure has been reached. Aside from pupillary block and plateau iris, multiple-mechanisms are more common contributors for closure of the angle such as choroidal thickness and uveal expansion, which may be responsible for the presenting features of PACG...
December 28, 2016: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28035845/efficacy-of-nd-yag-laser-iridotomies-in-primary-angle-closure-diseases-superior-peripheral-iridotomy-versus-inferior-peripheral-iridotomy
#6
Mostafa Ahmadi, Zahra Naderi Beni, Afsaneh Naderi Beni, Farzan Kianersi
PURPOSE: To evaluate the efficacy and safety of superior peripheral iridotomy versus inferior peripheral iridotomy in the treatment of primary angle closure glaucoma (PACG) in phakic patients. METHODS: In this randomized, prospective, paired-eye comparative study, patients with primary angle closure or primary angle-closure suspects were recruited and randomized to receive (NdYAG) laser peripheral iridotomy (LPI) superiorly in one eye and inferiorly in the other eye...
December 30, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28002189/to-study-the-efficacy-of-laser-peripheral-iridoplasty-in-the-treatment-of-eyes-with-primary-angle-closure-and-plateau-iris-syndrome-unresponsive-to-laser-peripheral-iridotomy-using-anterior-segment-oct-as-a-tool-comment
#7
https://www.readbyqxmd.com/read/27927679/temporal-ocular-coherence-tomography-measured-changes-in-anterior-chamber-angle-and-diurnal-intraocular-pressure-after-laser-iridoplasty-impact-study
#8
Rupert R A Bourne, Ivailo Zhekov, Shahina Pardhan
AIMS: To evaluate temporal change in anterior chamber angle anatomy following argon laser peripheral iridoplasty (ALPI) in eyes with occludable angles postlaser peripheral iridotomy (LPI) compared with control eyes. Additionally, the effect on diurnal intraocular pressure (DIOP) fluctuation (maximum-minimum IOP) was investigated. METHODS: Twenty-two patients with bilateral primary angle closure/suspects with gonioscopically occludable anterior chamber angles following LPI were randomised to receive ALPI (n=11) or no further treatment (n=11)...
December 7, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27905331/prevalent-practice-patterns-in-glaucoma-poll-of-indian-ophthalmologists-at-a-national-conference
#9
Nikhil Shreeram Choudhari, Vanita Pathak-Ray, Sushmita Kaushik, Prateep Vyas, Ronnie George
PURPOSE: The aim of this study is to explore and compare the prevailing practice patterns in the diagnosis and management of glaucoma among subspecialists and general ophthalmologists in India. MATERIALS AND METHODS: This is an interactive audience response system (ARS) based poll of ophthalmologists attending the annual conference of the Glaucoma Society of India in 2013. RESULTS: The information was obtained from 379 ophthalmologists (146 glaucoma specialists, 54 nonglaucoma subspecialists, and 179 general ophthalmologists)...
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27872755/changes-in-anterior-segment-morphology-of-iris-bombe-before-and-after-laser-peripheral-iridotomy-in-patients-with-uveitic-secondary-glaucoma
#10
Wakako Ikegawa, Takashi Suzuki, Koji Namiguchi, Shiro Mizoue, Atsushi Shiraishi, Yuichi Ohashi
Purpose. To quantify changes in anterior segment (AS) parameters after laser peripheral iridotomy (LPI) using AS-optical coherence tomography (OCT) of iris bombe. Method. AS images of eight eyes were captured before and after iris bombe and more than 2 weeks after LPI (post-LPI) using AS-OCT. We compared the following AS parameters: anterior chamber depth (ACD), anterior chamber volume (ACV), iris curvature (IC), iris thickness at 500 μm from the scleral spur (IT-1) in the middle between the iris root and pupillary margin (IT-2) and 500 μm from the pupillary margin (IT-3) to the anterior chamber angle (ACA) (angle opening distance [AOD750]), and trabecular iris space area...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27788183/angle-closure-scoring-system-acss-a-scoring-system-for-stratification-of-angle-closure-disease
#11
Aparna Rao, Debananda Padhy, Sarada Sarangi, Gopinath Das
PURPOSE: To evaluate the angle closure scoring system (ACSS) for stratifying primary angle course disease. METHODS: This observational cross sectional institutional study included patients with primary open angle glaucoma suspects (n = 21) and primary angle closure disease (primary angle closure, PAC, n = 63 and primary angle course glaucoma, PACG, n = 58 (defined by International society of Geographical and Epidemiological Ophthalmology, ISGEO). Two independent examiners blinded to clinical details, graded good quality pre-laser goniophotographs of the patients incorporating quadrants of peripheral anterior synechieae (PAS), non-visibility of posterior trabecular meshwork (PTM) and blotchy pigments (ranging from 1-4 quadrants), iris configuration, angle recess (sum of above depicting ACSSg) and lens thickness/axial length ratio (LT/AL), cup disc ratio and baseline intraocular pressure (IOP) to give total score (ACSSt)...
2016: PloS One
https://www.readbyqxmd.com/read/27756264/anterior-segment-configuration-as-a-predictive-factor-for-refractive-outcome-after-cataract-surgery-in-patients-with-glaucoma
#12
COMPARATIVE STUDY
Young Cheong Kim, Mi Sun Sung, Hwan Heo, Sang Woo Park
BACKGROUND: To compare refractive outcomes after cataract surgery between patients with closed-angle and open-angle glaucoma and evaluate the influence of preoperative factors on refractive outcomes in patients with glaucoma. METHODS: Patients diagnosed with glaucoma and who underwent uncomplicated cataract surgery were enrolled in this retrospective observational study. We collected data including age, history of prior laser peripheral iridotomy and trabeculectomy, type of glaucoma, manifest refraction, intraocular pressure, axial length, and various anterior segment parameters using anterior-segment optical coherence tomography...
October 18, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27727395/biometric-factors-associated-with-acute-primary-angle-closure-comparison-of-the-affected-and-fellow-eye
#13
Eray Atalay, Monisha E Nongpiur, Mani Baskaran, Sourabh Sharma, Shamira A Perera, Tin Aung
Purpose: To compare ocular biometric and anterior segment parameters between the affected and fellow eye in subjects with acute primary angle closure (APAC). Methods: We evaluated 76 subjects with unilateral APAC who had undergone bilateral laser peripheral iridotomy before enrollment. Imaging was done using anterior segment optical coherence tomography and a customized software was used to measure the following: angle opening distance (AOD750); trabecular-iris space area (TISA750); iris thickness (IT750); iris curvature (ICURV); iris area (IAREA); anterior chamber depth; area and volume (ACD; ACA and ACV); anterior chamber width (ACW); anterior vault (ACD+LV); lens vault (LV); and pupil diameter (PD)...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27726963/changes-in-anterior-segment-morphology-and-predictors-of-angle-widening-after-laser-iridotomy-in-south-indian-eyes
#14
Nazlee Zebardast, Srinivasan Kavitha, Palaniswamy Krishnamurthy, David S Friedman, Monisha E Nongpiur, Tin Aung, Harry A Quigley, Pradeep Y Ramulu, Rengaraj Venkatesh
PURPOSE: To compare anterior segment optical coherence tomography (ASOCT) angle morphology before and after laser peripheral iridotomy (LPI) in a cohort of South Indian subjects with primary angle-closure suspect (PACS) or primary angle-closure/primary angle-closure glaucoma (PAC/PACG) and to examine baseline parameters associated with angle widening. DESIGN: Prospective observational study. PARTICIPANTS: A total of 244 subjects aged ≥30 years with PACS or PAC/PACG in at least 1 eye...
October 7, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27707497/effectiveness-of-early-lens-extraction-for-the-treatment-of-primary-angle-closure-glaucoma-eagle-a-randomised-controlled-trial
#15
COMMENT
Augusto Azuara-Blanco, Jennifer Burr, Craig Ramsay, David Cooper, Paul J Foster, David S Friedman, Graham Scotland, Mehdi Javanbakht, Claire Cochrane, John Norrie
BACKGROUND: Primary angle-closure glaucoma is a leading cause of irreversible blindness worldwide. In early-stage disease, intraocular pressure is raised without visual loss. Because the crystalline lens has a major mechanistic role, lens extraction might be a useful initial treatment. METHODS: From Jan 8, 2009, to Dec 28, 2011, we enrolled patients from 30 hospital eye services in five countries. Randomisation was done by a web-based application. Patients were assigned to undergo clear-lens extraction or receive standard care with laser peripheral iridotomy and topical medical treatment...
October 1, 2016: Lancet
https://www.readbyqxmd.com/read/27621781/effects-of-laser-peripheral-iridotomy-on-corneal-endothelial-cell-density-and-cell-morphology-in-primary-angle-closure-suspect-subjects
#16
Hossein Jamali, Sara Jahanian, Reza Gharebaghi
PURPOSE: To evaluate the effects of prophylactic laser peripheral iridotomy on corneal endothelial cell density and cell morphology in subjects with primary angle closure suspect (PACS) within a one-year follow-up period. METHODS: In this quasi-experimental prospective study, from June 2012 to November 2013, thirty-five PACS eyes underwent laser peripheral iridotomy at clinics affiliated to Shiraz University of Medical Sciences, Shiraz, Iran. After obtaining informed consent, specular microscopy was performed at baseline and at 3-month, 6-month and 12-month follow-up visits...
July 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27606482/comparing-laser-peripheral-iridotomy-to-cataract-extraction-in-narrow-angle-eyes-using-anterior-segment-optical-coherence-tomography
#17
Ephrem Melese, Jeffrey R Peterson, Robert M Feldman, Laura A Baker, Nicholas P Bell, Alice Z Chuang, Lauren S Blieden
PURPOSE: To evaluate the changes in anterior chamber angle (ACA) parameters in primary angle closure (PAC) spectrum eyes before and after cataract extraction (CE) and compare to the changes after laser peripheral iridotomy (LPI) using anterior segment optical coherence tomography (ASOCT). METHODS: Twenty-eight PAC spectrum eyes of 18 participants who underwent CE and 34 PAC spectrum eyes of 21 participants who underwent LPI were included. ASOCT images with 3-dimensional mode angle analysis scans were taken with the CASIA SS-1000 (Tomey Corp...
2016: PloS One
https://www.readbyqxmd.com/read/27552499/acute-primary-angle-closure-in-the-fellow-eye-as-a-complication-of-facedown-position-after-vitrectomy-surgery
#18
Zhong Lin, Ronghan Wu, Nived Moonasar, Yehui Zhou
PURPOSE: To report a case of acute primary angle closure that developed in the fellow eye rapidly after facedown position after vitrectomy surgery. PATIENTS AND METHODS: A 66-year-old female developed acute primary angle closure in the fellow eye approximately 1.5 hours after facedown position after vitrectomy surgery for macular hole. RESULTS: The intraocular pressure was controlled after treatment that included halting the facedown position, intravenous mannitol injection, and topical pilocarpine instillation...
January 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/27485723/is-prophylactic-laser-peripheral-iridotomy-for-primary-angle-closure-suspects-a-risk-factor-for-cataract-progression-the-chennai-eye-disease-incidence-study
#19
Lingam Vijaya, Rashima Asokan, Manish Panday, Ronnie George
BACKGROUND: To report the risk of cataract progression among primary angle closure suspects (PACS) 6 years after they underwent laser peripheral iridotomy (LPI). METHODS: In the Chennai Eye Disease Incidence Study, 6 years after their baseline evaluation, 4421 subjects were examined again. As part of a detailed evaluation cataract was graded using the Lens Opacities Classification System II; progression was defined as change of cataract by two or more grades or history of cataract surgery in the 6-year period...
August 2, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27475976/management-of-plateau-iris-syndrome-with-cataract-extraction-and-endoscopic-cyclophotocoagulation
#20
David A Hollander, Mark E Pennesi, Jorge A Alvarado
Plateau iris configuration describes an anatomic abnormality in which large or anteriorly positioned pars plicata push the iris root forward, thereby narrowing the anterior chamber angle. Plateau iris syndrome (PIS) is diagnosed if the angle remains occludable, either spontaneously or pharmacologically, after iridotomy. PIS has traditionally been treated with chronic pilocarpine or laser peripheral iridoplasty. A series of 9 eyes of 6 patients with PIS, diagnosed by dark room provocative testing and ultrasound biomicroscopy (UBM) following iridotomy, underwent cataract extraction and endoscopic cyclophotocoagulation (ECP)...
July 27, 2016: Experimental Eye Research
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