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Glaucoma drainage device

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https://www.readbyqxmd.com/read/29240598/intraluminal-deposits-found-in-glaucoma-tube-shunts-via-anterior-segment-ocular-coherence-tomography
#1
Jorge A Alvarado, Vinita Srivastava, Yang Sun
PURPOSE: To describe and characterize a novel observation of intraluminal deposits of glaucoma tube shunts (TS) using spectral domain (SD) ocular coherence topography (OCT). PATIENTS AND METHODS: Fifteen TS in 11 patients diagnosed with primary open angle, neovascular, aphakic, and uveitic glaucomas. Both Ahmed (n=11) and Baerveldt (n=4) TS were examined with 5-line raster anterior segment SD-OCT imaging. RESULTS: The exposed tubes of two patients had highly reflective intraluminal deposits in the corresponding exposed areas...
December 13, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29239864/trabeculectomy-outcomes-after-glaucoma-drainage-device-surgery
#2
Reza Alizadeh, Handan Akil, James Tan, Simon K Law, Joseph Caprioli
PURPOSE: To evaluate outcomes of trabeculectomy with adjunctive Mitomycin-C (MMC) in patients with uncontrolled intraocular pressure (IOP) after glaucoma drainage device implantation (GDD). METHODS: Consecutive patients who had undergone a trabeculectomy after GDD were reviewed. The primary outcome was surgical success with stratified IOP targets based on the following criteria: (A) IOP <18▒mm Hg and IOP reduction of 20%; (B) IOP <15▒mm Hg and IOP reduction of 25%; (C) IOP <12▒mm Hg and IOP reduction of 30%...
December 12, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29217351/endophthalmitis-then-and-now
#3
Nidhi Relhan, Richard K Forster, Harry W Flynn
PURPOSE: To report historically evolving strategies (then and now) in prevention and management of endophthalmitis. DESIGN: A perspective on relevant topics in the prophylaxis and management of endophthalmitis. METHODOLOGY: This is an author selected review of studies leading to changes in strategies for endophthalmitis management over the last 100 years. RESULTS: The current perspective discusses the trends and strategies over the past century...
December 4, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29211548/aqueous-drainage-device-erosion-a-review-of-rates-risks-prevention-and-repair
#4
Upneet Bains, Ambika Hoguet
Aqueous drainage device tube erosions require prompt intervention to prevent endophthalmitis. As the use of drainage devices in glaucoma surgery continues to increase, recognizing and managing tube erosions is a pertinent issue. This review provides a comprehensive overview of tube erosions, including the rates of erosion with various types of patch grafts, the risk factors associated with erosion, and approaches to repair in order to counsel and treat our patients to prevent endophthalmitis.
December 6, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29199011/long-term-outcome-of-second-ahmed-valves-in-adult-glaucoma
#5
Nima Fatehi, Esteban Morales, Nucharee Parivisutt, Reza Alizadeh, Grace Ang, Joseph Caprioli
PURPOSE: To evaluate the long-term outcomes of second Ahmed glaucoma valve (AGV) implants in eyes with glaucoma. DESIGN: Retrospective interventional case-series. METHODS: Patients with sequential second Ahmed valves implanted in the same eye from 1994 to 2016 were included. Success was defined with three criteria: (A) Intraocular pressure (IOP) ≤ 21 mmHg and IOP reduction of 20%; (B) IOP ≤18 mmHg and IOP reduction of 25%; and (C) IOP ≤15mm Hg and IOP reduction of 30%...
November 30, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29177182/glaucoma-surgery-and-induced-astigmatism-a-systematic-review
#6
REVIEW
Helen H L Chan, Yu Xiang G Kong
Background: The refractive outcomes of glaucoma surgeries, particularly their effect on astigmatism, are incompletely understood. Main body: Trabeculectomy is associated with a considerable amount of with-the-rule astigmatic change in the immediate postoperative period. This is followed by a gradual against-the-rule shift. These changes are altered with the use of mitomycin C (MMC). Non-penetrating surgery such as deep sclerectomy is also associated with a similar or smaller degree of induced astigmatism...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29117009/risk-factors-for-earlier-re-exposure-of-glaucoma-drainage-devices
#7
Atalie C Thompson, Varsha Manjunath, Kelly W Muir
PURPOSE: The purpose of this study was to investigate factors associated with a second exposure of a glaucoma drainage device (GDD) following repair of an initial GDD exposure. MATERIALS AND METHODS: This IRB-approved retrospective cohort study examined the incidence of a second exposure of a GDD following initial repair for exposure. Logistic regression was performed to assess the relationship between demographic and clinical characteristics and a second exposure of the GDD...
November 7, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29077179/hyaluronidase-injection-for-improved-tissue-dissection-in-baerveldt-tube-surgery
#8
Alon Zahavi, John R Grigg
PURPOSE: To describe a novel technique for tissue dissection during Baerveldt tube surgery. METHODS: We present a technique for posterior dissection of conjunctiva and Tenon tissue for the placement of a glaucoma drainage device. Hyaluronidase is used in the early stages of surgery in order to minimize tissue trauma and facilitate easy dissection even through existing adhesions and conjunctival scarring. RESULTS: The technique facilitates convenient dissection through tissues...
October 16, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29062779/understanding-practice-patterns-of-glaucoma-sub-specialists-in-india
#9
Nikhil S Choudhari, Vanita Pathak-Ray, Sushmita Kaushik, Prateep Vyas, Ronnie George
AIM: To obtain information on the prevailing practice patterns of glaucoma specialists in India. METHODS: Glaucoma specialists attending the Annual Conference of the Glaucoma Society of India (GSI) were surveyed. This survey, conducted in 2013, was based on an interactive audience response system. RESULTS: The information was obtained from 146 glaucoma specialists. Approximately half (n=83; 57%) had ≥10y of experience in managing glaucoma and were in institutional practice (n=74, 51%)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29049735/clinical-and-biological-evaluations-of-biodegradable-collagen-matrices-for-glaucoma-drainage-device-implantation
#10
COMPARATIVE STUDY
Minjung Song, Seunghyun Lee, Deokyeong Choe, Sera Kim, Young Hoon Roh, Seungsoo Rho
Purpose: To characterize the clinical and biological properties of biodegradable collagen matrices (BCMs) for possible glaucoma drainage device implantation. Methods: A total of 68 refractory glaucoma eyes, followed up postoperatively for at least 6 months, were consecutively enrolled after retrospective chart review. The BCM-augmented Ahmed valve implantations (BAAVI) using our Ologen-6 and Ologen-7 valves were performed and compared with a conventional method...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29045330/simultaneous-implantation-of-an-ahmed-and-baerveldt-glaucoma-drainage-device-for-uncontrolled-intraocular-pressure-in-advanced-glaucoma-comment
#11
Richa Gupta, Surabhi Gupta
No abstract text is available yet for this article.
October 17, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29034151/aqueous-shunt-implantation-in-glaucoma
#12
REVIEW
Jing Wang, Keith Barton
Aqueous shunts or glaucoma drainage devices are increasingly utilized in the management of refractory glaucoma. The general design of the most commonly-used shunts is based on the principles of the Molteno implant: ie. a permanent sclerostomy (tube), a predetermined bleb area (plate) and diversion of aqueous humour to the equatorial region and away from the limbal subconjunctival space. These three factors make aqueous shunts more resistant to scarring as compared to trabeculectomy. The two most commonly used shunts are the Ahmed Glaucoma Valve, which contains a flow-restrictor, and the non-valved Baervedlt Glaucoma Implant...
July 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29027064/light-scattering-measurements-in-electron-beam-sterilized-corneas-stored-in-recombinant-human-serum-albumin
#13
Khoa D Tran, Yan Li, Jeffrey D Holiman, Maolong Tang, David Huang, Michael D Straiko, Christopher G Stoeger
Irradiated corneal tissues have been used for a variety of ophthalmic procedures including glaucoma drainage device covers and lamellar grafts. The maintenance of corneal clarity is important, as light obstructions resulting from processing or long-term storage of irradiated corneas may negatively affect vision and postoperative cosmesis. It has been reported that corneal tissues can be preserved in human serum albumin (HSA), however, the clarity of corneas after long-term storage in HSA has not been well described...
October 12, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28944192/intraocular-pressure-control-of-a-novel-glaucoma-drainage-device-in-vitro-and-in-vivo-studies
#14
Li-Jun Cui, Di-Chen Li, Jian Liu, Lei Zhang, Yao Xing
AIM: To evaluate the intraocular pressure (IOP) control of an artificial trabeculum drainage system (ATDS), a newly designed glaucoma drainage device, and postoperative complications in normal rabbit eyes. METHODS: Pressure drops in air and fluid of 30 ATDS were measured after being connected to a closed manometric system. Twenty of them were then chosen and implanted randomly into the eyes of 20 rabbits. Postoperative slit-lamp, gonioscopic examination and IOP measurements were recorded periodically...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28930886/upper-eyelid-splitting-to-facilitate-the-insertion-of-glaucoma-drainage-devices
#15
Lorraine M Provencher, Keith D Carter, Jeffrey A Nerad, Wallace L M Alward
PURPOSE: To describe a new application for vertical splitting of the upper eyelid, a technique traditionally used for orbital access, in order to facilitate glaucoma drainage device implantation in patients with poor surgical exposure. METHODS: Case series. CASES: We present a case of Möbius syndrome with complete restriction of the extraocular muscles, followed by a case of cicatricial narrowing of the palpebral fissures due to chronic allergic dermatitis...
September 19, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28930885/author-response-regarding-simultaneous-implantation-of-an-ahmed-and-baerveldt-glaucoma-drainage-device-for-uncontrolled-intraocular-pressure-in-advanced-glaucoma
#16
Veena Rao, Pratap Challa
No abstract text is available yet for this article.
September 19, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28919702/micro-invasive-glaucoma-surgery-migs-a-review-of-surgical-procedures-using-stents
#17
Lutz E Pillunat, Carl Erb, Anselm Gm Jünemann, Friedemann Kimmich
Over the last decade several novel surgical treatment options and devices for glaucoma have been developed. All these developments aim to cause as little trauma as possible to the eye, to safely, effectively, and sustainably reduce intraocular pressure (IOP), to produce reproducible results, and to be easy to adopt. The term "micro-invasive glaucoma surgery (MIGS)" was used for summarizing all these procedures. Currently MIGS is gaining more and more interest and popularity. The possible reduction of the number of glaucoma medications, the ab interno approach without damaging the conjunctival tissue, and the probably safer procedures compared to incisional surgical methods may explain the increased interest in MIGS...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28900712/-starflo-a-suprachoroidal-drainage-implant-in-glaucoma-surgery
#18
S König, C W Hirneiß
BACKGROUND: The STARflo Glaucoma Device (iSTAR Medical, Wavre, Belgium) offers a new approach to bleb-free filtering surgery in which the intraocular pressure (IOP) is lowered by supporting outflow of the aqueous humor into the suprachoroidal space. MATERIALS AND METHODS: On the basis of a case series of 9 patients with open-angle glaucoma (OAG) unmanageable by drug-based treatment, intra- and postoperative experiences with the implant are presented. The implant, the implantation procedure, and the first results 6 months postoperatively are described...
September 12, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28858960/ahmed-valve-upstream-obstruction-caused-by-fibrous-ingrowth-surgical-approach
#19
Joana Medeiros Pinto, Nuno Pinto Ferreira, Luis Abegão Pinto
Glaucoma secondary to penetrating keratoplasty can be challenging and multiple surgeries may be needed to control the intraocular pressure (IOP), including the use of glaucoma drainage implants. However, late failure of these drainage implant surgery is common, mostly because of excessive scarring or bleb encapsulation which may require further surgical intervention. We present a case of a young patient referred for advanced glaucoma secondary to penetrating keratoplasty and chronic uveitis. He presented with elevated IOP under maximal therapy, already with 2 failed trabeculectomies and a nonfunctional Ahmed Valve...
October 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28858156/comparison-of-efficacy-and-complications-of-cyclophotocoagulation-and-second-glaucoma-drainage-device-after-initial-glaucoma-drainage-device-failure
#20
Margaret Y Wang, Kishan Patel, Lauren S Blieden, Alice Z Chuang, Laura A Baker, Nicholas P Bell, Robert M Feldman
PURPOSE: Compare intraocular pressure (IOP) control and complication rates of a second glaucoma drainage device (GDD) to diode transscleral cyclophotocoagulation (TSCPC) following failure of an initial GDD. PATIENTS AND METHODS: Eyes with 1 GDD that required a second GDD or TSCPC for glaucoma control were included. Exclusion criteria were a cyclodestructive procedure before initial GDD, no light perception vision, or follow-up <1 year. Failure was defined as ≥1 of (1) reoperation for lowering IOP; (2) explantation of second GDD; (3) persistent hypotony; (4) use of oral carbonic anhydrase inhibitor for lowering IOP in the study eye; or (5) loss of light perception...
November 2017: Journal of Glaucoma
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