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New treatments for glaucoma

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https://www.readbyqxmd.com/read/28809847/genome-wide-expression-datasets-of-anti-vegf-and-dexamethasone-treatment-of-angiogenesis-in-the-rat-cornea
#1
Anthony Mukwaya, Pierfrancesco Mirabelli, Anton Lennikov, Maria Xeroudaki, Mira Schaupper, Beatrice Peebo, Neil Lagali
Therapeutics against pathologic new blood vessel growth, particularly those targeting vascular endothelial growth factor (VEGF) are of enormous clinical interest. In the eye, where anti-VEGF agents are in widespread clinical use for treating retinal and corneal blindness, only partial or transient efficacy and resistance to anti-VEGF agents are among the major drawbacks. Conversely, corticosteroids have long been used in ophthalmology for their potency in suppressing inflammation and angiogenesis, but their broad biological activity can give rise to side effects such as glaucoma and cataract...
August 15, 2017: Scientific Data
https://www.readbyqxmd.com/read/28804247/ophthalmology-in-north-america-early-stories-1491-1801
#2
REVIEW
Christopher T Leffler, Stephen G Schwartz, Ricardo D Wainsztein, Adam Pflugrath, Eric Peterson
New World plants, such as tobacco, tomato, and chili, were held to have beneficial effects on the eyes. Indigenous healers rubbed or scraped the eyes or eyelids to treat inflammation, corneal opacities, and even eye irritation from smoke. European settlers used harsh treatments, such as bleeding and blistering, when the eyes were inflamed or had loss of vision with a normal appearance (gutta serena). In New Spain, surgery for corneal opacity was performed in 1601 and cataract couching in 1611. North American physicians knew of contralateral loss of vision after trauma or surgery (sympathetic ophthalmia), which they called "sympathy...
2017: Ophthalmology and Eye Diseases
https://www.readbyqxmd.com/read/28774519/undetected-angle-closure-in-patients-with-a-diagnosis-of-open-angle-glaucoma
#3
Devesh K Varma, Sarah M Simpson, Amandeep S Rai, Iqbal Ike K Ahmed
OBJECTIVE: The aim of this study was to identify the proportion of patients referred to a tertiary glaucoma centre with a diagnosis of open-angle glaucoma (OAG) who were found to have angle closure glaucoma. DESIGN: Retrospective chart review. METHODS: Consecutive new patients referred for glaucoma management to a tertiary centre between July 2010 and December 2011 were reviewed. Patients whose referrals for glaucoma assessment specified angle status as "open" were included...
August 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28767090/a-magnetic-balanced-inductive-link-for-the-simultaneous-uplink-data-and-power-telemetry
#4
Chen Gong, Dake Liu, Zhidong Miao, Min Li
When using the conventional two-coil inductive link for the simultaneous wireless power and data transmissions in implantable biomedical sensor devices, the strong power carrier could overwhelm the uplink data signal and even saturate the external uplink receiver. To address this problem, we propose a new magnetic-balanced inductive link for our implantable glaucoma treatment device. In this inductive link, an extra coil is specially added for the uplink receiving. The strong power carrier interference is minimized to approach zero by balanced canceling of the magnetic field of the external power coil...
August 2, 2017: Sensors
https://www.readbyqxmd.com/read/28737758/real-world-experience-with-0-2%C3%A2-%C3%AE-g-day-fluocinolone-acetonide-intravitreal-implant-iluvien-in-the-united-kingdom
#5
C Bailey, U Chakravarthy, A Lotery, G Menon, J Talks
AimsTo compare safety outcomes and visual function data acquired in the real-world setting with FAME study results in eyes treated with 0.2 μg/day fluocinolone acetonide (FAc).MethodsFourteen UK clinical sites contributed to pseudoanonymised data collected using the same electronic medical record system. Data pertaining to eyes treated with FAc implant for diabetic macular oedema (DMO) was extracted. Intraocular pressure (IOP)-related adverse events were defined as use of IOP-lowering medication, any rise in IOP>30 mm Hg, or glaucoma surgery...
July 24, 2017: Eye
https://www.readbyqxmd.com/read/28730968/modulation-of-the-immune-system-for-the-treatment-of-glaucoma
#6
Katharina Bell, Nadine von Thun Und Hohenstein-Blaul, Julia Teister, Franz H Grus
At present intraocular pressure (IOP) lowering therapies are the only approach to treat glaucoma. Neuroprotective strategies to protect the retinal ganglion cells (RGC) from apoptosis are lacking to date. Results from clinical studies revealed altered immunoreactivities against retinal and optic nerve antigens in sera and aqueous humor of glaucoma patients and point toward an autoimmune involvement in glaucomatous neurodegeneration and RGC death. IgG accumulations along with plasma cells were found localised in human glaucomatous retinae in a pro-inflammatory environment possibly maintained by microglia...
July 19, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28730285/an-update-on-implants-for-minimally-invasive-glaucoma-surgery-migs
#7
REVIEW
Ejaz Ansari
For several years, the gold standard for surgical treatment of glaucoma has been trabeculectomy. Although very successful at reducing intraocular pressure (IOP), there are several potential complications of trabeculectomy, including sight-threatening ones. This has stimulated much research aimed at the development of new and effective procedures to lower IOP with an enhanced safety profile. Minimally invasive glaucoma surgery (MIGS) procedures prioritise patient safety but also demonstrate efficacy in reducing IOP...
July 20, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28721823/genetic-risk-factors-for-glaucoma-and-exfoliation-syndrome-identified-by-genome-wide-association-studies
#8
Yoichi Sakurada, Fumihiko Mabuchi
Glaucoma is a neurodegenerative disease characterized by the progressive loss of retinal ganglion cells and optic nerve axons. According to its anatomical features, glaucoma is mainly subdivided into primary open-angle glaucoma (POAG) and primary angle-closure glaucoma (PACG). Exfoliation syndrome (XFS) and glaucoma (XFG) are characterized by the accumulation of extracellular materials in ocular tissues, particularly the lens surface and pupillary border. In addition to the two major forms of glaucoma, XFG is the most common cause of secondary open-angle glaucoma...
July 18, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28720436/direct-measurement-of-pressure-independent-aqueous-humour-flow-using-iperfusion
#9
Michael Madekurozwa, Ester Reina-Torres, Darryl R Overby, Joseph M Sherwood
Reduction of intraocular pressure is the sole therapeutic target for glaucoma. Intraocular pressure is determined by the dynamics of aqueous humour secretion and outflow, which comprise several pressure-dependent and pressure-independent mechanisms. Accurately quantifying the components of aqueous humour dynamics is essential in understanding the pathology of glaucoma and the development of new treatments. To better characterise aqueous humour dynamics, we propose a method to directly measure pressure-independent aqueous humour flow...
September 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28700902/a-novel-algorithm-to-detect-glaucoma-risk-using-texton-and-local-configuration-pattern-features-extracted-from-fundus-images
#10
U Rajendra Acharya, Shreya Bhat, Joel E W Koh, Sulatha V Bhandary, Hojjat Adeli
Glaucoma is an optic neuropathy defined by characteristic damage to the optic nerve and accompanying visual field deficits. Early diagnosis and treatment are critical to prevent irreversible vision loss and ultimate blindness. Current techniques for computer-aided analysis of the optic nerve and retinal nerve fiber layer (RNFL) are expensive and require keen interpretation by trained specialists. Hence, an automated system is highly desirable for a cost-effective and accurate screening for the diagnosis of glaucoma...
June 29, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28671927/micropulse-cyclophotocoagulation-initial-results-in-refractory-glaucoma
#11
Matthew E Emanuel, Davinder S Grover, Ronald L Fellman, David G Godfrey, Oluwatosin Smith, Michelle R Butler, Helen L Kornmann, William J Feuer, Swati Goyal
PURPOSE: The purpose of this study is to evaluate the use of micropulse transscleral cyclophotocoagulation (MP-TSCPC), a new and increasingly popular treatment, in patients with uncontrolled glaucoma. METHODS: A retrospective chart review was performed for all patients who underwent a MP-TSCPC at the Glaucoma Associates of Texas. RESULTS: A total of 84 eyes were treated with MP-TSCPC in this study with a mean follow-up time of 4.3 months. The mean age of treated patients was 74 years and 48 (57%) were female...
June 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28658977/n-hydroxymethylglycinate-with-edta-is-an-efficient-eye-drop-preservative-with-very-low-toxicity-an-in-vitro-comparative-study
#12
Martina Cristaldi, Melania Olivieri, Gabriella Lupo, Carmelina D Anfuso, Salvatore Pezzino, Dario Rusciano
PURPOSE: Preservatives are used in multi-dose ophthalmic topical medications in order to prevent contamination by bacteria and fungi. However, prolonged use of preserved eye drops, as it may happen in dry eye or glaucoma, may damage cells of the ocular surface. Therefore, an important goal is to find preservatives with low toxicity which are mild to host cells, still able to prevent drug contamination so to maintain their sterility and efficacy. Hence, aim of this study has been to compare the relative toxicity on a rabbit corneal cell line of a new preservative, made by the association of N-hydroxy-methyl-glycinate (NIG) with disodium-ethylene diamine tetra-acetate (EDTA), with other known and widely used eye-drops preservatives...
June 28, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28656780/brimonidine-and-brinzolamide-for-treating-glaucoma-and-ocular-hypertension-a-safety-evaluation
#13
Jed Asher Lusthaus, Ivan Goldberg
Brimonidine tartrate and brinzolamide eye drops are often used as third and fourth line treatment options to reduce intraocular pressure (IOP) in the management of glaucoma and ocular hypertension. Better tolerated, more effective topical agents requiring once daily instillation including prostaglandin analogues and beta-blockers usually are preferred as initial therapy, unless there are contraindications. Brimonidine and brinzolamide are often required owing to progressive glaucoma or intolerances to or ineffectiveness of front-line agents...
June 28, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28640115/management-of-neovascular-glaucoma-with-intravitreal-ranibizumab-panretinal-photocoagulation-and-subsequent-5-fluorouracil-augmented-trabeculectomy-a-case-report
#14
Xinyue Zhao, Zhi Wang, Xiaobo Yang
RATIONALE: Neovascular glaucoma (NVG) is one of the most refractory types of glaucoma caused by high ischemic retinal disorders, resulting in severe visual loss. Intravitreal injections of ranibizumab have been reported to have anatomical and functional success in treating NVG. PATIENT CONCERNS-DIAGNOSES-INTERVENTIONS: We report a case with neovascular glaucoma due to central retinal vein occlusion who received combination therapy with intravitreal ranibizumab (IVR) injection, panretinal photocoagulation (PRP) and subsequent 5-fluorouracil (5-FU) augmented trabeculectomy...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28617721/analysis-of-a-physician-led-team-based-care-model-for-the-treatment-of-glaucoma
#15
Nelson S Winkler, Gena M Damento, Sunil S Khanna, David O Hodge, Cheryl L Khanna
PURPOSE: To determine the effect of a protocol for a new physician-led, team-based glaucoma care model implemented in 2008 at Mayo Clinic's campus in Rochester, Minnesota (MCR), to increase conformance with the American Academy of Ophthalmology (AAO) Preferred Practice Pattern guidelines for treatment of primary open-angle glaucoma. METHODS: Records of 591 patients with newly diagnosed glaucoma were assessed retrospectively for the completion of 9 AAO Preferred Practice Pattern recommended metrics including measured corneal thickness, intraocular pressure (IOP), cup to disk ratio, visual acuity, recorded IOP target, gonioscopy, fundus photos, ocular coherence tomography, and visual field in the 3 years before and 3 years after protocol implementation...
June 14, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28609185/discovery-and-preclinical-development-of-netarsudil-a-novel-ocular-hypotensive-agent-for-the-treatment-of-glaucoma
#16
Cheng-Wen Lin, Bryan Sherman, Lori A Moore, Carmen L Laethem, Da-Wen Lu, Padmanabhan P Pattabiraman, Ponugoti Vasantha Rao, Mitchell A deLong, Casey C Kopczynski
PURPOSE: Rho-associated protein kinase (ROCK) inhibitors lower intraocular pressure (IOP) by increasing aqueous outflow through the trabecular meshwork (TM). The preclinical characterization of netarsudil, a new ROCK/norepinephrine transporter (NET) inhibitor currently in clinical development, is presented herein. METHODS: The kinase inhibitory activity of netarsudil was compared to its esterase metabolite, netarsudil-M1, and 3 other ROCK inhibitors using a commercially available kinase assay kit...
June 13, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28604498/is-multiple-sclerosis-associated-with-a-lower-intraocular-pressure
#17
Norah S Lincoff, Andrea Buccilli, Bianca Weinstock-Guttman, Sandra Sieminski, Sirin Gandhi
OBJECTIVE: To determine if multiple sclerosis (MS) is associated with lower intraocular pressure (IOP) compared with individuals without MS. METHODS: Thirty patients with clinically definite MS were identified and a retrospective chart review was conducted. Each patient with MS underwent IOP recording by a single investigator using kinetic applanation tonometry. Measurement of central corneal thickness (CCT) also was obtained. Similarly, 30 study controls were identified and kinetic applanation tonometry and CCT were recorded...
September 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28596919/rho-kinase-rock-as-a-potential-drug-target-for-vitreoretinal-diseases
#18
REVIEW
Muneo Yamaguchi, Shintaro Nakao, Mitsuru Arima, Iori Wada, Yoshihiro Kaizu, Feng Hao, Shigeo Yoshida, Koh-Hei Sonoda
Rho-associated kinase (Rho-kinase/ROCK) was originally identified as an effector protein of the G protein Rho. Its involvement in various diseases, particularly cancer and cardiovascular disease, has been elucidated, and ROCK inhibitors have already been applied clinically for cerebral vasospasm and glaucoma. Vitreoretinal diseases including diabetic retinopathy, age-related macular degeneration, and proliferative vitreoretinoapthy are still a major cause of blindness. While anti-VEGF therapy has recently been widely used for vitreoretinal disorders due to its efficacy, attention has been drawn to new unmet needs...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28594895/atp-sensitive-potassium-katp-channel-openers-diazoxide-and-nicorandil-lower-intraocular-pressure-by-activating-the-erk1-2-signaling-pathway
#19
Uttio Roy Chowdhury, Cindy K Bahler, Bradley H Holman, Michael P Fautsch
Elevated intraocular pressure is the most prevalent and only treatable risk factor for glaucoma, a degenerative disease of the optic nerve. While treatment options to slow disease progression are available, all current therapeutic and surgical treatments have unwanted side effects or limited efficacy, resulting in the need to identify new options. Previous reports from our laboratory have established a novel ocular hypotensive effect of ATP-sensitive potassium channel (KATP) openers including diazoxide (DZ) and nicorandil (NCD)...
2017: PloS One
https://www.readbyqxmd.com/read/28586267/content-design-and-system-implementation-of-a-teleophthalmology-system-for-eye-disease-diagnosis-and-treatment-and-its-preliminary-practice-in-guangdong-china
#20
Di Xiao, Janardhan Vignarajan, Tingting Chen, Tiantian Ye, Baixiang Xiao, Nathan Congdon, Yogessan Kanagasingam
BACKGROUND: We have developed a new telemedicine system for comprehensive eye examination, diabetic retinopathy (DR) screening, and eye disease diagnosis and treatment. The novel points of the system include a tablet application for facilitating doctor's examination and diagnosis process, a comprehensive eye examination component, and integrated treatment planning and recording. METHODS: The system provided a new service model through one ophthalmological center linking with multiple remote and rural hospitals for eye care in Guangdong province, China...
June 6, 2017: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
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