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Laser peripheral iridotomy

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https://www.readbyqxmd.com/read/28385302/subclassification-of-primary-angle-closure-using-anterior-segment-optical-coherence-tomography-and-ultrasound-biomicroscopic-parameters
#1
Junki Kwon, Kyung Rim Sung, Seungbong Han, Ye Ji Moon, Joong Won Shin
PURPOSE: To classify eyes with primary angle closure (PAC) in terms of the features visualized using anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM). DESIGN: Retrospective, observational study. PARTICIPANTS: A total of 73 eyes of 73 patients with PAC. METHODS: Participants' eyes that had undergone laser peripheral iridotomy (LPI) were imaged using AS-OCT and UBM under the same lighting conditions...
April 3, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28356143/reverse-pupillary-block-after-implantation-of-a-scleral-sutured-posterior-chamber-intraocular-lens-a-retrospective-open-study
#2
Seung Pil Bang, Choun-Ki Joo, Jong Hwa Jun
BACKGROUND: To report the clinical features of patients with reverse pupillary block (RPB) after scleral-sutured posterior chamber intraocular lens (PC IOL) implantation and biometric changes after laser peripheral iridotomy (LPI). METHODS: Eight patients attending our hospital's ophthalmology outpatient clinic, who developed RPB after implantation of a scleral-sutured PC IOL due to subluxation of the crystalline lens or IOL, were investigated in this retrospective, observational study...
March 29, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28302178/laser-peripheral-iridotomy-versus-laser-peripheral-iridotomy-plus-laser-peripheral-iridoplasty-in-the-treatment-of-multi-mechanism-angle-closure-study-protocol-for-a-randomized-controlled-trial
#3
Shida Chen, Jianhua Lv, Sujie Fan, Hong Zhang, Lin Xie, Ling Xu, Bing Jiang, Huipin Yuan, Yuanbo Liang, Shuning Li, Pingyan Chen, Xiulan Zhang, Ningli Wang
BACKGROUND: China has the largest burden of primary angle-closure glaucoma (PACG) worldwide. The mechanism of the angle closure is complex and includes pupillary block and non-pupillary block. Currently, opinion is that laser peripheral iridotomy (LPI) alone is not sufficient to prevent disease progression. Laser peripheral iridoplasty (LPIP) is an alternative and effective way of widening the angle recess in eyes that are affected by primary angle closure (PAC). However, it is not known if greater benefit would be achieved using LPI plus LPIP for PAC with multiple mechanisms (MAC)...
March 17, 2017: Trials
https://www.readbyqxmd.com/read/28292776/comparison-of-corneal-endothelial-cell-density-and-morphology-after-posterior-chamber-phakic-intraocular-lens-implantation-with-and-without-a-central-hole
#4
Hiroyasu Goukon, Kazutaka Kamiya, Kimiya Shimizu, Akihito Igarashi
AIM: To compare the corneal endothelial cells after posterior chamber phakic intraocular lens with and without a central hole (hole implantable collamer lens (ICL) and conventional ICL) implantation for the correction of moderate to high myopia. METHODS: This retrospective study evaluated 34 eyes of 34 patients who underwent hole ICL implantation and 25 eyes of 25 patients who underwent conventional ICL implantation. Preoperatively and 3 months, and 1 and 2 years postoperatively, we compared the central corneal endothelial cell density (ECD), coefficient of variation in cell size (CV) and the percentage of hexagonal cells (HEX) between the two groups using a non-contact specular microscope (EM-3000, Tomey)...
March 14, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28288603/a-cute-angle-closure-attack-after-an-intravitreal-bevacizumab-injection-for-branch-retinal-vein-occlusion-a-case-report
#5
Seongyong Jeong, Min Sagong, Woohyok Chang
BACKGROUND: Intravitreal injection is widely used to treat retinal vein occlusion, and acute angle closure (AAC) is an exceptional complication of intravitreal injection. The authors report a case of AAC that occurred immediately after administering intravitreal bevacizumab to treat branch retinal vein occlusion (BRVO). CASE PRESENTATION: A 65-year-old woman was referred to the retina clinic of a tertiary referral center for the treatment of macular edema secondary to BRVO...
March 14, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28272229/occult-lens-subluxation-related-to-laser-peripheral-iridotomy-a-case-report-and-literature-review
#6
REVIEW
Rongrong Hu, Xiaoyu Wang, Yang Wang, Yang Sun
RATIONALE: Laser peripheral iridotomy (LPI) is commonly performed as a primary treatment for acute primary angle closure glaucoma after administration of anti-glaucoma medications or for prevention of this condition. Minor complications may occur following LPI and most of them do not have deleterious consequences. We report a rare case of lens subluxation that has a possible relationship with LPI treatment. PATIENT CONCERNS: A 54-year-old female patient was initially referred for surgical treatment of medication-uncontrollable angle closure glaucoma in her left eye...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28203193/recurrent-uveal-effusion-after-laser-iridotomy
#7
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
#8
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
#9
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
#10
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
#11
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...
March 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28035845/efficacy-of-neodymium-doped-yttrium-aluminum-garnet-laser-iridotomies-in-primary-angle-closure-diseases-superior-peripheral-iridotomy-versus-inferior-peripheral-iridotomy
#12
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 neodymium-doped yttrium aluminum garnet (Nd:YAG) laser peripheral iridotomy (LPI) superiorly in one eye and inferiorly in the other eye...
April 2017: 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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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...
December 2016: Ophthalmology
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