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Ophthalmic Research

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https://www.readbyqxmd.com/read/28728144/retinal-penetration-of-intravitreally-injected-tissue-plasminogen-activator-a-rat-model-study
#1
Kfir Tal, Assaf Dotan, Yael Nisgav, Mor Dachbash, Orly Gal-Or, Rita Ehrlich, Dan D Gaton, Dov Weinberger, Tami Livnat
PURPOSE: To determine whether intravitreal unconjugated tissue plasminogen activator (tPA) (alteplase) can penetrate the intact neural retina and reach the subretinal space in an experimental model. METHODS: This study was performed in 24 Sprague-Dawley rats aged 12 weeks. Under general anesthesia, the right eye was injected with either 0.75 μg of 3 μL tPA (14 rats; study group) or saline (10 rats, control group) into the vitreous. Animals were euthanized at 3, 24, and 48 h...
July 20, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28719889/combined-23-g-pars-plana-vitrectomy-and-lensectomy-in-the-management-of-glaucoma-associated-with-nanophthalmos
#2
Zhaotian Zhang, Shaochong Zhang, Xintong Jiang, Yantao Wei
PURPOSE: To investigate the surgical results of 23-G pars plana vitrectomy (PPV) combined with lensectomy (PPL) in nanophthalmic patients with angle closure glaucoma. METHODS: This prospective nonrandomized study included consecutive patients with nanophthalmic glaucoma recruited for 23-G PPV combined with PPL. Best-corrected visual acuity (BCVA), intraocular pressure (IOP), the number of antiglaucoma medications, and surgery-associated complications were recorded...
July 19, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28704825/dexamethasone-implants-in-diabetic-macular-edema-patients-with-high-visual-acuity
#3
Riccardo Sacconi, Maurizio Battaglia Parodi, Stefano Casati, Rosangela Lattanzio, Giorgio Marchini, Francesco Bandello
PURPOSE: To evaluate the effects of intravitreal dexamethasone (DEX) implants in patients affected by diabetic macular edema (DME) with high best-corrected visual acuity (BCVA) and contraindications to therapy with anti-vascular endothelial growth factor over a 12-month follow-up. METHODS: In this interventional nonrandomized clinical study, 14 consecutive patients (14 eyes) affected by DME with a BCVA of 0.3 LogMAR or better were prospectively enrolled. All patients were treated with a sustained-release 700-μg DEX implant at baseline, revaluated every 6 weeks, and retreated on a pro re nata basis...
July 14, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28697496/spatially-resolved-spectral-sensitivities-as-a-potential-read-out-parameter-in-clinical-gene-therapeutic-trials
#4
Birgit Lorenz, Erika Wegscheider, Christian Hamel, Markus N Preising, Knut Stieger
PURPOSE: Spatially resolved functional assessment of rods and cones under photopic and scotopic conditions is desirable to evaluate the treatment outcome of gene therapeutic applications in inherited retinal disorders, such as early- onset severe retinal dystrophy (EOSRD) or achromatopsia. METHODS: A sample of 3 healthy subjects, 6 patients with RPE65 deficiency (aged 11-45 years), and 3 patients with cone dysfunction disorders underwent spectral sensitivity testing (SST) under conditions of dark and light adaptation using a Humphrey Field Analyzer modified perimeter...
July 12, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28683455/binocular-fixation-reduces-fixational-eye-movements-in-the-worst-eye-of-patients-with-center-involving-diabetic-macular-edema
#5
Nanna Stæhr Jakobsen, Dorte Ancher Larsen, Toke Bek
PURPOSE: Treatment of diabetic maculopathy with vascular endothelial growth factor inhibitors is in some patients ineffective, and, therefore, parameters predicting visual outcome after treatment should be identified. It has been shown that fixational saccades are increased in patients with reduced visual acuity secondary to diabetic maculopathy, but it is unknown to what extent these saccades in an eye affected by diabetic maculopathy are influenced by the other eye during binocular fixation...
July 7, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28662522/17th-esaso-retina-academy-june-29-july-1-2017-berlin-germany-abstracts
#6
(no author information available yet)
No abstract text is available yet for this article.
June 29, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28651253/association-of-il-6-gene-174-and-572-g-c-polymorphisms-with-proliferative-diabetic-retinopathy-of-type-2-diabetes-in-a-chinese-population
#7
Qin-Kang Lu, Jun-Tao Zhang, Na Zhao, Hui-Yun Wang, Qi-Hu Tong, Shou-Li Wang
PURPOSE: To investigate the association of interleukin (IL)-6 with proliferative diabetic retinopathy (PDR) of type 2 diabetes (T2D) in a Chinese population. METHODS: Two subtypes of the IL-6 promoter (-174 and -572 G/C) were genotyped in 215 T2D patients with PDR and 207 T2D patients with a normal retinal function (controls) using the PCR-RFLP method. The mRNA and protein expression of IL-6 was examined by real-time PCR. RESULTS: T2D patients with PDR had a significantly higher frequency of IL-6 -174 GC (OR 0...
June 27, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28641277/association-of-the-cfh-y402h-polymorphism-with-the-1-year-response-of-exudative-amd-to-intravitreal-anti-vegf-treatment-in-the-brazilian-population
#8
Flavio Mac Cord Medina, Augusto Alves Lopes da Motta, Walter Yukihiko Takahashi, Pedro Carlos Carricondo, Mario Martins Dos Santos Motta, Monica B Melo, Jose Paulo C Vasconcellos
AIM: Evidence of the relationship between the polymorphism of the complement factor H (CFH) gene at position 402 (Y402H) and the response to the treatment of wet AMD is controversial. The aim of this study was to compare the functional and morphological 1-year evolution of patients with exudative AMD treated with antivascular endothelial growth factor (VEGF) drugs with the CFH Y402H polymorphism in the Brazilian population. METHODS: Forty-six patients treated for wet AMD with bevacizumab or ranibizumab in a pro re nata regimen were included...
June 23, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28571008/microrna-200b-expression-in-the-vitreous-humor-of-patients-with-proliferative-diabetic-retinopathy
#9
Amir Ramadan Gomaa, Eman Tayae Elsayed, Reham Fadl Moftah
BACKGROUND: The role of microRNA (miRNA)-200b in the pathogenesis of proliferative diabetic retinopathy (PDR) has been studied in diabetic animal models. The aim of this study was to assess miRNA-200b expression in the vitreous of patients with PDR and to determine its correlation with vascular endothelial growth factor (VEGF), one of the pathogenic mechanisms in PDR. METHODS: Quantitative reverse transcription polymerase chain reaction was used to measure miRNA-200b expression in the vitreous from 29 eyes with PDR and 30 eyes with idiopathic macular holes (IMH; control group)...
June 2, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28571005/importance-of-light-filters-in-modern-vitreoretinal-surgery-an-update-of-the-literature
#10
Michele Coppola, Maria Vittoria Cicinelli, Alessandro Rabiolo, Giuseppe Querques, Francesco Bandello
PURPOSE: Direct endobulbar illumination during vitreoretinal surgery causes light-induced retinal damage known as phototoxicity. Spectral filters have been proposed to eliminate hazardous wavelengths from the emission spectrum before entering the eye. The purpose of our paper is to review advances in vitreoretinal surgery, focusing on intraoperative light filters. METHODS: A PubMed and Medline database search was carried out using the terms "spectral filters" associated with "vitreoretinal surgery," "phototoxicity," and "vitrectomy...
June 2, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28538221/retinal-microvasculature-in-nonproliferative-diabetic-retinopathy-automated-quantitative-optical-coherence-tomography-angiography-assessment
#11
Marco Lupidi, Gabriel Coscas, Florence Coscas, Tito Fiore, Elisa Spaccini, Daniela Fruttini, Carlo Cagini
PURPOSE: To perform a qualitative and quantitative assessment of the foveal microvasculature in eyes with diabetic maculopathy using optical coherence tomography angiography (OCT-A). METHODS: Retrospective case series of 48 eyes with diabetic maculopathy and 47 healthy eyes evaluated by Spectralis OCT-A. Perifoveal arcade disruptions, linear vascular dilations, microaneurysms, intraretinal microvascular abnormalities and flow-void areas were qualitatively analyzed on OCT angiograms both for the superficial (SCP) and deep (DCP) capillary plexuses...
May 25, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28427057/long-term-anatomical-and-functional-outcomes-in-patients-with-ischemic-central-retinal-vein-occlusion-treated-with-anti-vascular-endothelial-growth-factor-agents
#12
Irini Chatziralli, George Theodossiadis, Efstratios Parikakis, Panagiotis G Mitropoulos, Panagiotis Theodossiadis
PURPOSE: To evaluate the anatomical and functional outcomes in patients with ischemic central retinal vein occlusion (CRVO) treated with intravitreal anti-vascular endothelial growth factor (VEGF) agents. METHODS: This retrospective study included 15 treatment-naive patients with ischemic CRVO and macular edema who were treated with intravitreal ranibizumab or aflibercept. The main outcomes were the evolution of retinal ischemia over time, as well as the change in best corrected visual acuity (BCVA) and in central subfield thickness (CST) at month 24...
April 21, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28662524/evicr-net-european-network-of-clinical-research-in-ophthalmology-information-update-june-2017
#13
C Martinho, D Fernandes
No abstract text is available yet for this article.
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28641302/7-hexagon-multifocal-electroretinography-for-an-objective-functional-assessment-of-the-macula-in-14-seconds
#14
Etienne M Schönbach, Voraporn Chaikitmongkol, Rachel Annam, Emma C McDonnell, Yulia Wolfson, Emily Fletcher, Hendrik P N Scholl
PURPOSE: We present the multifocal electroretinogram (mfERG) with a 7-hexagon array as an objective test of macular function that can be recorded in 14 s. We provide normal values and investigate its reproducibility and validity. METHODS: Healthy participants underwent mfERG testing according to International Society for Clinical Electrophysiology of Vision (ISCEV) standards using the Espion Profile/D310 multifocal ERG system (Diagnosys, LLC, Lowell, MA, USA). One standard recording of a 61-hexagon array and 2 repeated recordings of a custom 7-hexagon array were obtained...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28633137/incidence-and-characteristics-of-congenital-cataract-surgery-in-france-from-2010-to-2012-the-episafe-program
#15
Vincent Daien, Annick Le Pape, Didier Heve, Max Villain, Dominique Bremond Gignac
INTRODUCTION: Prevention of visual impairment due to congenital cataract is an international priority as part of VISION 2020 - The Right to Sight, the joint initiative of the World Health Organization and the International Agency for the Prevention of Blindness. The present study is part of the Epidemiology and Safety (EPISAFE) collaborative program aiming at assessing the epidemiology and safety of interventions in ophthalmology. METHODS: All children who underwent cataract surgery before the age of 1 year in France between January 2010 and December 2012 were identified by using the Programme de Médicalisation des Systèmes d'Information...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28564657/relationship-between-elevated-intraocular-pressure-and-divided-peripapillary-sector-retinal-nerve-fiber-layer-thickness-in-a-cynomolgus-monkey-laser-induced-ocular-hypertension-model
#16
Tetsuro Noguchi, Masamitsu Shimazawa, Koji Hamaguchi, Tomoaki Araki, Naoto Horai, Hideaki Hara
AIMS: We investigated the relationship between elevated intraocular pressure (IOP) and changes in global and peripapillary sector retinal nerve fiber layer (RNFL) thickness around the optic nerve head (ONH) in the laser-induced ocular hypertension monkey model. METHODS: To induce high IOP, green laser photocoagulation burns were applied around the trabecular meshwork of 1 eye from each of 12 cynomolgus monkeys. The animals had been acclimated to IOP measurement under conscious conditions for more than 2 months, and IOP was chronologically measured...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28535498/can-dmco-detect-visual-field-loss-in-neurological-patients-a-secondary-validation-study
#17
Ane Sophie Olsen, Alvilda Thougaard Steensberg, Morten la Cour, Troels Wesenberg Kjaer, Bertil Damato, Lars Hageman Pinborg, Miriam Kolko
Unrecognized visual field loss is caused by a range of blinding eye conditions as well as serious brain diseases. The commonest cause of asymptomatic visual field loss is glaucoma. No screening tools have been proven cost-effective. Damato Multifixation Campimetry Online (DMCO), an inexpensive online test, has been evaluated as a future cost-beneficial tool to detect glaucoma. To further validate DMCO, this study aimed to test DMCO in a preselected population with neurological visual field loss. METHODS: The study design was an evaluation of a diagnostic test...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28468021/comparison-of-the-outcomes-of-trabeculectomy-with-5-fluorouracil-versus-ologen-implant-in-primary-open-angle-glaucoma
#18
Wisam Shihadeh, Ihab Massad, Yousef Khader, Ahmed Al-Rawi, Tala Alshalakhti
PURPOSE: To compare the outcomes of trabeculectomy with 5-fluorouracil (5-FU) versus Ologen™ implant in patients with primary open-angle glaucoma. METHODS: A retrospective chart review was performed of patients with primary open-angle glaucoma who underwent trabeculectomy using either Ologen or 5-FU over 12 consecutive months. The patients had moderate-to-advanced primary open-angle glaucoma and uncontrolled intraocular pressure (IOP) on maximally tolerated medical treatment...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28463846/visual-outcomes-of-pars-plana-vitrectomy-with-epiretinal-membrane-peeling-in-patients-with-asteroid-hyalosis-a-matched-cohort-study
#19
Ali Mouna, Jean-Paul Berrod, Jean-Baptiste Conart
BACKGROUND: The study aimed to evaluate outcomes of epiretinal membrane (ERM) peeling in patients with asteroid hyalosis (AH) and to compare them with those from controls without AH. METHODS: This is a retrospective matched cohort study of 1,104 consecutive patients who underwent surgery for ERM between January 2004 and February 2014. Patients with AH were included in the study group and were matched for preoperative visual acuity, age, gender, date of surgery, and axial length with control patients without AH selected from the same cohort...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28449000/three-year-follow-up-of-trabeculectomy-with-5-fluorouracil
#20
Friederike Lindemann, Niklas Plange, David Kuerten, Hannah Schimitzek, Antonis Koutsonas
PURPOSE: To evaluate the long-term outcome of trabeculectomy with intra- and postoperative 5-fluorouracil (5-FU) application in glaucoma. METHODS: Eighty-six patients with glaucoma planned for primary trabeculectomy with 5-FU and a minimum follow-up of 3 years were retrospectively analyzed. Success rates, postsurgical 5-FU injections, needling procedures, and complications were analyzed. RESULTS: Mean intraocular pressure (IOP) decreased from 27...
2017: Ophthalmic Research
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