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https://www.readbyqxmd.com/read/29762268/influence-of-removing-the-large-retinal-vessels-related-effect-on-peripapillary-vessel-density-progression-analysis-in-glaucoma
#1
Gábor Holló
PURPOSE: To investigate the usefulness of removing the large vessel-related information from peripapillary optical coherence tomography (OCT) angiography progression analysis. Peripapillary vessel density (VD) image series which had shown no progression with an earlier software version that did not separate capillary and large vessel-related effects were reevaluated for selective peripapillary capillary VD progression. METHODS: Prospective retinal nerve fiber layer thickness (RNFLT) and peripapillary VD measurements were made using the Angiovue/RTvue-XR OCT on one eye of 9 normal, 20 under treatment ocular hypertensive (OHT) and 24 under treatment open-angle glaucoma patients at 6-month intervals for 2 years (5 visits)...
May 12, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29750712/perspective-new-recommendations-for-the-treatment-of-systemic-hypertension-and-their-potential-implications-for-glaucoma-management
#2
Carlos Gustavo De Moraes, George A Cioffi, Robert N Weinreb, Jeffrey M Liebmann
There is compelling evidence that low systemic blood pressure is associated with glaucoma prevalence and progression. Recently, new guidelines for treatment of systemic hypertension have been implemented and recommend lower target blood pressure. These guidelines may have implications on the rates of glaucoma progression seen in clinical practice and how clinicians should be prepared to identify patients at risk. More importantly, a new paradigm to monitor glaucoma progression is patients treated for systemic hypertension may be warranted in light of these recent changes...
May 10, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29750009/xen-glaucoma-treatment-system-in-the-management-of-refractory-glaucomas-a-short-review-on-trial-data-and-potential-role-in-clinical-practice
#3
REVIEW
A De Gregorio, E Pedrotti, G Stevan, A Bertoncello, S Morselli
The recent development of new devices that are significantly less invasive, collectively termed minimally invasive glaucoma surgery, offers new perspective of intraocular pressure reduction with less risk, short operating times, and rapid recovery. The aim of this work is to provide a panoramic review of the currently published clinical data to assess the potential role of XEN gel stent (Allergan PLC, Irvine, CA, USA) in the management of glaucoma, which is the only filtering minimally invasive glaucoma surgery device that allows the subconjunctival filtration...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29620183/puerarin-regulates-neovascular-glaucoma-through-pigment-epithelium%C3%A2-derived-growth-factor%C3%A2-induced-nf%C3%A2-%C3%AE%C2%BAb-signaling-pathway
#4
Hui-Yu Wei, Ya-Jie Zhang, Shao-Zhen Zhao
Neovascular glaucoma is an ophthalmic disease and a potentially blinding secondary glaucoma caused by the formation of abnormal new blood vessels on the iris, which can prevent the normal drainage of water from the anterior segment of the eye. Evidence from China has suggested that puerarin benefits many diseases including myocardial infarction, stable angina, cerebral ischemia and glaucoma in a clinical setting. In the present study, the aim was to investigate the efficacies of puerarin on neovascular glaucoma in a mouse model...
March 28, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29577954/assessment-of-flow-dynamics-in-retinal-and-choroidal-microcirculation
#5
REVIEW
Xin Wei, Praveen Kumar Balne, Kenith E Meissner, Veluchamy A Barathi, Leopold Schmetterer, Rupesh Agrawal
Alterations in ocular blood flow have been implicated in mechanisms that lead to vision loss in patients with various ocular disorders such as diabetic retinopathy, glaucoma, and age-related macular degeneration. Assessment of retinal and choroidal blood flow is also a window to evaluate systemic diseases that affect microvasculature. Quantification and qualification of the blood flow in the retina and choroid help us understand pathophysiology, stratify disease risk, and monitor disease progression in these disorders...
March 22, 2018: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29559881/atypical-presentation-of-extramedullary-plasmacytoma
#6
Eric Wallace, Zachary Stewart, David Theriot, William Shaffer, Shane Guillory, Michael Hanemann, Raman Danrad, Bradley Spieler
Background: Plasmacytomas are monoclonal proliferations of plasma cells that typically affect the intramedullary axial skeleton. Imaging findings of an extramedullary plasmacytoma on radiograph and computed tomography can be nonspecific and can resemble other entities such as lymphoma, metastases, chondrosarcomas, or giant cell tumors. Case Report: A 60-year-old female with a medical history of partial complex seizures, hypertension, diabetes, glaucoma, and hyperlipidemia presented with complaints of superficial abdominal pain associated with erythema and swelling for 3 weeks...
2018: Ochsner Journal
https://www.readbyqxmd.com/read/29559700/impact-of-different-visual-field-testing-paradigms-on-sample-size-requirements-for-glaucoma-clinical-trials
#7
Zhichao Wu, Felipe A Medeiros
Visual field testing is an important endpoint in glaucoma clinical trials, and the testing paradigm used can have a significant impact on the sample size requirements. To investigate this, this study included 353 eyes of 247 glaucoma patients seen over a 3-year period to extract real-world visual field rates of change and variability estimates to provide sample size estimates from computer simulations. The clinical trial scenario assumed that a new treatment was added to one of two groups that were both under routine clinical care, with various treatment effects examined...
March 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29545417/prevalence-and-causes-of-vision-loss-in-high-income-countries-and-in-eastern-and-central-europe-in-2015-magnitude-temporal-trends-and-projections
#8
Rupert R A Bourne, Jost B Jonas, Alain M Bron, Maria Vittoria Cicinelli, Aditi Das, Seth R Flaxman, David S Friedman, Jill E Keeffe, John H Kempen, Janet Leasher, Hans Limburg, Kovin Naidoo, Konrad Pesudovs, Tunde Peto, Jinan Saadine, Alexander J Silvester, Nina Tahhan, Hugh R Taylor, Rohit Varma, Tien Y Wong, Serge Resnikoff
BACKGROUND: Within a surveillance of the prevalence and causes of vision impairment in high-income regions and Central/Eastern Europe, we update figures through 2015 and forecast expected values in 2020. METHODS: Based on a systematic review of medical literature, prevalence of blindness, moderate and severe vision impairment (MSVI), mild vision impairment and presbyopia was estimated for 1990, 2010, 2015, and 2020. RESULTS: Age-standardised prevalence of blindness and MSVI for all ages decreased from 1990 to 2015 from 0...
March 15, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29530811/iron-chelating-agents-attenuate-nmda-induced-neuronal-injury-via-reduction-of-oxidative-stress-in-the-rat-retina
#9
Kenji Sakamoto, Taishi Suzuki, Kosuke Takahashi, Takumi Koguchi, Tasuku Hirayama, Asami Mori, Tsutomu Nakahara, Hideko Nagasawa, Kunio Ishii
Excitoneurotoxicity is regarded as one of the mechanisms of the death of retinal ganglion cells induced by retinal central artery occlusion and glaucoma. Oxidative stress is at least in part involved in excitoneurotoxicity. Fenton reaction, which is catalyzed by Fe2+ , is known to cause formation of hydroxyl radical, one of reactive oxygen species, suggesting that chelation of iron may be protective against excitoneurotoxicity. In the present study, we histologically evaluated whether zinc-deferoxamine (Zn-DFO) and deferasirox (DFX), common iron-chelating agents, were protective against N-methyl-D-aspartate (NMDA)-induced retinal injury in the rat in vivo...
March 9, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29516047/uncommon-form-of-normal-tension-glaucoma
#10
Mihail Zemba, Tatiana Danilova, Liliana Pulbere, Alina-Cristina Stamate
Aim: To present diagnostic particularities, assessment of prognosis, and the need for treatment in a case of normal-tension glaucoma. Methods: - presentation of clinical changes and investigations supporting the diagnosis; - careful anamnesis that disclosed new elements, useful for the evaluation of the case. Results: after a two-year follow-up period, we can ascertain that the optic atrophy is non-progressive. Conclusions: the assessment of risk factors and a rigorous anamnesis were significant for the establishment of prognosis and need for treatment...
October 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29503942/drainage-and-analysis-of-suprachoroidal-fluid-in-a-patient-with-acute-systemic-lupus-erythematous
#11
James A Stefater, Dean Eliott, Leo A Kim
Purpose: To describe a case of a patient with acute systemic lupus erythematous (SLE) causing choroidal effusions and to report a novel technique for evaluation of the choroidal fluid which sheds light on effusion pathogenesis. Observations: A 37 year-old woman was referred for decreased vision, eye pain and shortness of breath. The patient had bilateral angle closure glaucoma from choroidal effusions and bilateral pleural effusions. Work-up revealed new onset acute SLE...
April 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29501771/grgm-13-comprising-13-plant-and-animal-products-inhibited-oxidative-stress-induced-apoptosis-in-retinal-ganglion-cells-by-inhibiting-p2rx7-p38-mapk-signaling-pathway
#12
Qiu-Li Zhang, Wei Wang, Yan Jiang, A-Tuya, Dongmei, Lan-Lan Li, Zhan-Jun Lu, He Chang, Tian-Zi Zhang
OBJECTIVE: To determine the effectiveness of GRGM-13 on oxidative stress induced apoptosis of retinal ganglion cells (RGCs) and revealed its possible mechanism. MATERIALS AND METHODS: Caspase-3 activity, MDA level, and glutathione peroxidase level were detected by Caspase-3 assay kit, Lipid Peroxidation MDA Assay Kit, and Total Glutathione Peroxidase Assay Kit, respectively. Protein levels of Bax, Bcl-2, p-p38 and p38 were observed by Western Blot. Reactive oxygen species assay kit was used to determine intracellular ROS level...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29486754/treating-diabetic-macular-oedema-dmo-real-world-uk-clinical-outcomes-for-the-0-19mg-fluocinolone-acetonide-intravitreal-implant-iluvien%C3%A2-at-2-years
#13
William Fusi-Rubiano, Chandoshi Mukherjee, Mark Lane, Marie D Tsaloumas, Nicholas Glover, Andrej Kidess, Alastair K Denniston, Helen E Palmer, Avinash Manna, Rupal Morjaria
BACKGROUND: To compare visual function and structural improvements in pseudophakic eyes with diabetic macular oedema (DMO) treated with the 0.19mg Fluocinolone Acetonide (FAc) intravitreal implant (IluvienTM ) in a 'real world' setting. METHODS: A single centre retrospective evaluation of patients with DMO unresponsive to conventional treatment treated with the FAc implant according to UK guidelines. Primary efficacy endpoint was best corrected visual acuity (BCVA); secondary endpoints included optical coherence tomography evaluations of the macula (a) central retinal and (b) peak macular thickness collected at annual time points...
February 27, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29476443/prospective-evaluation-of-two-istent-%C3%A2-trabecular-stents-one-istent-supra-%C3%A2-suprachoroidal-stent-and-postoperative-prostaglandin-in-refractory-glaucoma-4-year-outcomes
#14
Jonathan S Myers, Imran Masood, Dana M Hornbeak, Jose I Belda, Gerd Auffarth, Anselm Jünemann, Jane Ellen Giamporcaro, Jose M Martinez-de-la-Casa, Iqbal Ike K Ahmed, Lilit Voskanyan, L Jay Katz
INTRODUCTION: This study evaluates long-term outcomes of two trabecular micro-bypass stents, one suprachoroidal stent, and postoperative prostaglandin in eyes with refractory open angle glaucoma (OAG). METHODS: Prospective ongoing 5-year study of 80 eligible subjects (70 with 4-year follow-up) with OAG and IOP ≥ 18 mmHg after prior trabeculectomy and while taking 1-3 glaucoma medications. Subjects received two iStent® trabecular micro-bypass stents, one iStent Supra® suprachoroidal stent, and postoperative travoprost...
March 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29468812/modulation-of-schlemm-s-canal-endothelial-cell-stiffness-via-latrunculin-loaded-block-copolymer-micelles
#15
Trevor Stack, Amir Vahabikashi, Mark Johnson, Evan Scott
Increased stiffness of Schlemm's canal endothelial cells (SC cells) is a major contributing factor to the increased pressure characteristic of primary open-angle glaucoma. New treatments for glaucoma are being developed using actin depolymerizers and rho kinase inhibitors to address this increased stiffness. However, these agents have off-target effects and are not as potent as had been hoped. We have developed a micellar nanocarrier assembled from poly(ethylene glycol)-bl-poly(propylene sulfide) copolymers capable of encapsulating latrunculin A (Lat A) with the goal of modulating SC cell stiffness...
February 22, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29456251/tonometers-which-one-should-i-use
#16
REVIEW
Kanza Aziz, David S Friedman
Although several factors are known to play a role in the development and progression of glaucoma, intraocular pressure (IOP) remains the only modifiable risk factor. Medical and surgical treatments for glaucoma both aim to reduce IOP to minimize disease progression. Tonometry is therefore an essential element of the ophthalmological exam. There are several types of tonometers available currently. These range from well-established instruments that have been in clinical use for decades to new devices, which are the result of recent technological advances...
February 19, 2018: Eye
https://www.readbyqxmd.com/read/29450382/iridex-micropulse-p3-innovative-cyclophotocoagulation
#17
M Monica Gavris, Ioana Olteanu, Erzsebet Kantor, Radu Mateescu, Roxana Belicioiu
Purpose: To present the new IRIDEX MicroPulse P3 (MP3) technology in patients with refractory glaucoma and our preliminary results at 1 week and 1 month postoperatively. Methods: IRIDEX MP3 laser cyclophotocoagulation was performed in 7 eyes of 7 patients under retrobulbar anaesthesia with lidocaine 2% in the operating room. Each eye received two treatments of 80-90s over the superior and inferior hemisphere, avoiding the temporal- and nasal-most clock hours. 810nm IRIDEX MP3 was set to 31,3% duty cycle (0,5ms treatment pulse followed by 1,1 ms of rest)...
April 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29445943/impact-of-the-clinical-use-of-rock-inhibitor-on-the-pathogenesis-and-treatment-of-glaucoma
#18
REVIEW
Megumi Honjo, Hidenobu Tanihara
Rho-associated protein kinase (ROCK), a ubiquitously expressed signaling messenger and downstream effector of Rho, is activated by several bioactive factors in the aqueous humor (AH). Rho-ROCK signaling regulates a wide spectrum of fundamental cellular events, including cell adhesion, motility, proliferation, differentiation, and apoptosis. Previous studies, including our own, found that ROCK inhibitor lowers intraocular pressure (IOP) via a direct effect on the conventional AH outflow pathway, by regulation of contractile properties, fibrotic activity, and permeability of the trabecular meshwork (TM) and Schlemm's canal (SC) tissues, influencing extracellular matrix (ECM) production...
March 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29409899/a-12-year-study-of-slotted-palladium-103-plaque-radiation-therapy-for-choroidal-melanoma-near-touching-or-surrounding-the-optic-nerve
#19
Abhilasha Maheshwari, Paul T Finger
PURPOSE: To present our 12-year experience with low-energy-photon, slotted eye plaque radiation therapy. DESIGN: Retrospective interventional case series. METHODS: Setting: The New York Eye Cancer Center. STUDY POPULATION: Fifty-two consecutive patients with uveal melanomas near, touching, or surrounding the optic disc. INTERVENTION: Slotted eye plaque radiation therapy. MAIN OUTCOME MEASURES: Change in visual acuity, local tumor control, radiation side effects, eye salvage, and systemic metastases...
April 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29402077/trifunctional-high-throughput-screen-identifies-promising-scaffold-to-inhibit-grp94-and-treat-myocilin-associated-glaucoma
#20
Dustin J E Huard, Vincent M Crowley, Yuhong Du, Ricardo A Cordova, Zheying Sun, Moya O Tomlin, Chad A Dickey, John Koren, Laura Blair, Haian Fu, Brian S J Blagg, Raquel L Lieberman
Gain-of-function mutations within the olfactomedin (OLF) domain of myocilin result in its toxic intracellular accumulation and hasten the onset of open-angle glaucoma. The absence of myocilin does not cause disease; therefore, strategies aimed at eliminating myocilin could lead to a successful glaucoma treatment. The endoplasmic reticulum Hsp90 paralog Grp94 accelerates OLF aggregation. Knockdown or pharmacological inhibition of Grp94 in cells facilitates clearance of mutant myocilin via a non-proteasomal pathway...
April 20, 2018: ACS Chemical Biology
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