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Glaucoma drainage device

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https://www.readbyqxmd.com/read/28625688/electrically-atomised-formulations-of-timolol-maleate-for-direct-and-on-demand-ocular-lens-coatings
#1
Prina Mehta, Ali Al-Kinani, Rita Haj-Ahmad, Muhammad Sohail Arshad, Ming-Wei Chang, G Raid Alany, Zeeshan Ahmad
Advances in nanotechnology have enabled solutions for challenging drug delivery targets. While the eye presents numerous emerging opportunities for delivery, analysis and sensing; issues persist for conventional applications. This includes liquid phase formulation localisation on the ocular surface once administered as formulated eye-drops; with the vast majority of dosage (>90%) escaping from the administered site due to tear production and various drainage mechanisms. The work presented here demonstrates a single needle electrohydrodynamic (EHD) engineering process to nano-coat (as an on demand and controllable fiber depositing method) the surface of multiple contact lenses rendering formulations to be stationary on the lens and at the bio-interface...
June 15, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28587882/combined-vitrectomy-and-glaucoma-drainage-device-implantation-surgical-approach-for-complex-pediatric-glaucomas
#2
Cem Ozgonul, Cagri G Besirli, Brenda L Bohnsack
PURPOSE: To evaluate efficacy of combined vitrectomy with posteriorly-placed glaucoma drainage device (GDD) in lowering intraocular pressure (IOP) in children. PATIENTS AND METHODS: Retrospective case review identified 20 children who underwent vitrectomy with posteriorly-placed GDD with minimal 6-months follow-up. First eye operated on was included. Success was defined as IOP 5-20 mmHg, no additional IOP-lowering surgery or visually-devastating complications. RESULTS: Patients with primary infantile-onset glaucoma (25%), traumatic glaucoma (15%), Peters anomaly (15%), microphthalmia (25%), glaucoma following cataract surgery (10%), microspherophakia (5%), and retinopathy of prematurity (5%) were included...
June 3, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28575917/-surgical-options-in-glaucoma-management
#3
Thomas S Dietlein, André Rosentreter
During the last few years, there has been a considerable capacity of innovations in glaucoma surgery owing to new micro-stents increasing the aqueous outflow via transscleral routes, via the trabecular meshwork or the suprachoroidal space. These interventions can be easily performed in combination with small-incision cataract surgery. Even the well-known filtering procedures, trabeculectomy and drainage device surgery, formerly perceived as being outdated, re-achieve better reputation owing to refinements in surgical technique and improved surgical experience...
June 2, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28557830/evaluation-of-the-efficacy-and-safety-of-the-new-susanna-glaucoma-drainage-device-in-refractory-glaucomas-short-term-results
#4
Remo Susanna
No abstract text is available yet for this article.
May 26, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28557828/vitreous-occlusion-of-a-glaucoma-drainage-implant-surgical-management
#5
Kateki Vinod, Joseph F Panarelli, Ronald C Gentile, Paul A Sidoti
Vitreous occlusion of a glaucoma drainage implant (GDI) can lead to failure of the device and severely elevated intraocular pressure. The pathophysiology of tube obstruction is related to central and anterior displacement of vitreous that is drawn into and condenses within the proximal lumen of the tube. This can occur from days to years following GDI surgery. Successful management of vitreous-tube obstruction generally requires manual removal of the condensed vitreous plug with end-grasping forceps. This technique achieves reversal of tube blockage and restoration of GDI function...
May 26, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28546928/modified-deep-sclerectomy-combined-with-ex-press-filtration-device-versus-trabeculectomy-for-primary-open-angle-glaucoma
#6
Vassilios Kozobolis, Georgios D Panos, Aristeidis Konstantinidis, Miguel Teus, Georgios Labiris
AIM: To compare the efficacy of modified deep sclerectomy combined with Ex-PRESS shunt versus trabeculectomy in primary open angle glaucoma. METHODS: This is a prospective cohort comparative single-center study. Forty-nine eyes of 49 patients were enrolled in the study. Patients were randomly divided into two groups. Group A (22 patients) underwent classic trabeculectomy and group B (27 patients) underwent modified deep sclerectomy combined with insertion of Ex-PRESS model P50 drainage device...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28529825/innovative-approaches-to-glaucoma-management-of-boston-keratoprosthesis-type-1
#7
Thasarat S Vajaranant, Jessica Liu, Jacob Wilensky, M Soledad Cortina, Ahmad A Aref
Glaucoma remains a prevalent disorder and visual limiting factor after Boston keratoprosthesis type 1 implantation. Patients with glaucoma have worse initial and late visual acuity outcomes after otherwise successful keratoprosthesis implantation. Management of glaucoma in the setting of a keratoprosthesis is challenging because of relatively rapid progression and an inability to accurately measure intraocular pressure (IOP). In addition, there are no standard guidelines for glaucoma surveillance and monitoring after keratoprosthesis surgery...
September 2016: Current Ophthalmology Reports
https://www.readbyqxmd.com/read/28506604/the-supraciliary-space-as-a-suitable-pathway-for-glaucoma-surgery-ho-hum-or-home-run
#8
REVIEW
Michele Figus, Chiara Posarelli, Andrea Passani, Timothy G Albert, Francesco Oddone, Angela Tindara Sframeli, Marco Nardi
The supraciliary space is a physiological route for aqueous humor outflow located anteriorly between the outer surface of the ciliary body and the internal surface of the sclera. Posteriorly, the suprachoroidal space is located between the choroid and the internal surface of the sclera. These spaces have been targeted as suitable and helpful pathways for glaucoma treatment, alternatives to the traditional subconjunctival space. The subconjunctival surgical pathway is affected by several limitations such as poor cosmesis, a lifetime risk for endophthalmitis, and an unpredictable wound healing response...
May 12, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28448424/rapid-intraocular-tube-trimming-for-glaucoma-drainage-implant-devices
#9
Paul Baciu, Stephen J Moster, Richard K Lee
PURPOSE: To describe a new approach for shortening silicone tubes of glaucoma drainage devices (GDDs). MATERIALS AND METHODS: A retrospective intervention case series describing 3 patients undergoing the same treatment at a single institutional center RESULTS:: Three patients underwent successful ab interno trimming of GDD silicone tubes without complication CONCLUSIONS:: This technique allows for rapid and successful shortening of GDD tubes via an ab interno approach avoiding risks of traditional glaucoma tube trimming approaches...
May 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28442696/surgical-management-of-pediatric-glaucoma
#10
Ingrid Chang, Joseph Caprioli, Yvonne Ou
Pediatric glaucoma surgery is challenging because of the differences in anatomy from the adult, differences in the behavior of the tissues of a child's glaucomatous eye, the variety in causes of the disease, and difficulties with postoperative management. Goniotomy and trabeculotomy are the preferred initial treatments for primary congenital glaucoma. Trabeculectomy with adjunctive mitomycin C is more likely to succeed in older, phakic patients, but carries the long-term risk of bleb-associated endophthalmitis...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28442690/mini-drainage-devices-for-anterior-and-intermediate-filtration
#11
Marco Nardi, Chiara Posarelli, Francesco Nasini, Michele Figus
Mini glaucoma devices for external filtration may be implanted with an ab externo procedure (Ex-PRESS and InnFocus Microshunt) or with an ab interno procedure (XEN Gel stent). The Ex-PRESS is an FDA-approved mini glaucoma device that has been developed in order to simplify anterior guarded filtering procedures, making them faster, safer and easier. It is positioned under a scleral flap and it is introduced in the anterior chamber through a needle hole, avoiding the excision of the corneal-scleral button and the iridectomy...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28441214/the-osteo-odonto-keratoprosthesis
#12
REVIEW
Mehran Zarei-Ghanavati, Venkata Avadhanam, Alfonso Vasquez Perez, Christopher Liu
PURPOSE OF REVIEW: To describe the practice of and recent developments in the osteo-odonto-keratoprosthesis. RECENT FINDINGS: Formal psychological assessment and support have been described. A sub-aqua system for fashioning the osteo-odonto-keratoprosthesis lamina; adoption of thicker laminae; use of bisphosphonate drugs; advances in laminar imaging; and use of bone augmentation and bone morphogenetic protein have been described for prevention, detection, and management of laminar resorption...
July 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28421664/intermediate-term-and-long-term-outcome-of-piggyback-drainage-connecting-glaucoma-drainage-device-to-a-device-in-situ-for-improved-intraocular-pressure-control
#13
Edward Dervan, Edward Lee, Antonio Giubilato, Tina Khanam, Panayiotis Maghsoudlou, William H Morgan
IMPORTANCE: This study provides results of a treatment option for patients with failed primary glaucoma drainage device. BACKGROUND: The study aimed to describe and evaluate the long-term intraocular pressure control and complications of a new technique joining a second glaucoma drainage device directly to an existing glaucoma drainage device termed 'piggyback drainage'. DESIGN: This is a retrospective, interventional cohort study. PARTICIPANTS: Eighteen eyes of 17 patients who underwent piggyback drainage between 2004 and 2013 inclusive have been studied...
April 19, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28394811/glaucoma-drainage-device-erosion-following-ptosis-surgery
#14
Steven S Bae, Robert J Campbell
PURPOSE: To highlight the potential risk of glaucoma drainage device erosion following ptosis surgery. METHODS: Case report. RESULTS: A 71-year-old man underwent uncomplicated superotemporal Ahmed glaucoma valve implantation in the left eye in 2008. Approximately 8 years later, the patient underwent bilateral ptosis repair, which successfully raised the upper eyelid position. Three months postoperatively, the patient's glaucoma drainage implant tube eroded through the corneal graft tissue and overlying conjunctiva to become exposed...
April 7, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28379649/grafts-in-glaucoma-surgery-a-review-of-the-literature
#15
Sahil Thakur, Parul Ichhpujani, Suresh Kumar
Patients with bleb leakage, dehiscence, or infection after trabeculectomy need urgent bleb salvaging to prevent vision loss. Patients who have undergone a glaucoma drainage device surgery may have tube erosion, which is yet another devastating and outcome-compromising complication. The bleb or the tube in such cases needs to be patched by a biologic tissue, which is roofed by the conjunctiva and acts as a barrier against external infections. Sclera, pericardium, cornea, and dura mater are the commonly used patch graft materials...
March 29, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28356708/the-efficacy-of-alahmady-ring-implantation-in-the-management-of-neovascular-glaucoma
#16
Alahmady H Alsmman, Gamal Radwan, Mohammed Elagouz, Usama Ali Mohammed
PURPOSE: To evaluate the efficacy and safety of Alahmady ring implantation in the management of neovascular glaucoma. METHODS: A total of 15 eyes of 15 patients with intractable neovascular glaucoma with intraocular pressure (IOP) ≥28 mmHg not responding to medical treatment were retrospectively analyzed. All patients had poor visual acuity and underwent Alahmady ring implantation. The ring was designed from fenestrated silicon tube used in lacrimal surgeries and was implanted subsclerally after passing it through the anterior chamber...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28345564/innovations-in-glaucoma-surgery-from-dr-rajendra-prasad-centre-for-ophthalmic-sciences
#17
Tanuj Dada, Neha Midha, Pooja Shah, Talvir Sidhu, Dewang Angmo, Ramanjit Sihota
Trabeculectomy surgery is the current standard of care in glaucoma for achieving a low target intraocular pressure if medical therapy is not adequate. Augmentation of trabeculectomy with antimetabolites brought a revolutionary change in the long-term success rates of trabeculectomy, but along with it came a plethora of complications. There still is a big window for therapeutic innovations on this subject. The foremost target for these innovations is to modulate the wound healing response after glaucoma drainage surgery...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28319643/grooved-glaucoma-drainage-devices-that-continuously-deliver-cyclosporine-a-decrease-postsurgical-scar-formation-in-rabbit-eyes
#18
Zhaoxing Dai, Xiaobo Yu, Jianguo Sun, Xinghuai Sun
Purpose: To study the functional outcomes of filtration surgery by implanting improved glaucoma drainage devices (GDDs) comprising surface grooves and a composite coating of cyclosporine A (CsA) and PLGA in experimental rabbit eyes. Methods: Improved GDDs were designed and prepared by modifying normal GDD with surface grooves and a CsA-PLGA composite coating. Normal GDDs, grooved GDDs (G-GDDs), and G-GDDs with a CsA-PLGA composite coating (CsA@G-GDD) were implanted into 18 rabbit eyes (six eyes per group)...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28303370/comparison-of-graft-survival-following-penetrating-keratoplasty-and-descemet-s-stripping-endothelial-keratoplasty-in-eyes-with-a-glaucoma-drainage-device
#19
Shawn M Iverson, Oriel Spierer, George C Papachristou, William J Feuer, Wei Shi, David S Greenfield, Terrence P O'Brien
PURPOSE: To compare corneal graft survival rates after penetrating keratoplasty (PK) and Descemet's stripping endothelial keratoplasty (DSEK) in patients with a glaucoma drainage device (GDD) or medically managed glaucoma. METHODS: A retrospective chart review was conducted on consecutive patients who underwent primary PK or primary DSEK. Inclusion criteria consisted of eyes with a diagnosis of glaucoma prior to corneal transplantation and a minimum of 6 months of follow-up...
March 16, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28301639/association-of-repeated-intravitreous-bevacizumab-injections-with-risk-for-glaucoma-surgery
#20
Brennan D Eadie, Mahyar Etminan, Bruce C Carleton, David A Maberley, Frederick S Mikelberg
Importance: Intravitreous injections of anti-vascular endothelial growth factor (VEGF) agents are associated with a sustained increase in intraocular pressure. This sustained elevated intraocular pressure could lead to higher rates of glaucoma surgery to lower this pressure. Objective: To determine the risk of glaucoma surgery following repeated intravitreous bevacizumab injections. Design, Setting, Participants: This nested, case-control study acquired and analyzed data from large, population-based, linked health databases supported by the British Columbia Ministry of Health in Canada...
April 1, 2017: JAMA Ophthalmology
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