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Age related macular degeneration

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https://www.readbyqxmd.com/read/28655032/age-related-macular-degeneration-in-patients-with-chronic-myeloproliferative-neoplasms
#1
Marie Bak, Torben Lykke Sørensen, Esben Meulengracht Flachs, Ann-Dorthe Zwisler, Knud Juel, Henrik Frederiksen, Hans Carl Hasselbalch
Importance: It has been suggested that systemic inflammation increases the risk of age-related macular degeneration (AMD). Given that chronic immune modulation is present in patients with myeloproliferative neoplasms (MPNs), the risk of AMD in these patients may be increased. Objective: To compare the risk of AMD in patients with MPNs with the risk of AMD in matched controls from the general population. Design, Setting, and Participants: A nationwide population-based cohort study using Danish registers was conducted of all patients in Denmark who received a diagnosis between January 1, 1994, and December 31, 2013, of essential thrombocythemia, polycythemia vera, myelofibrosis, or unclassifiable MPNs...
June 22, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28654970/probing-the-role-of-inflammation-in-age-related-macular-degeneration
#2
Christine A Curcio, Carrie Huisingh
No abstract text is available yet for this article.
June 22, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28654630/prognostic-value-of-subretinal-hyperreflective-material-in-neovascular-age-related-macular-degeneration-treated-with-bevacizumab
#3
Russell Pokroy, Michael Mimouni, Edward Barayev, Fani Segev, Noa Geffen, Arie Y Nemet, Ori Segal
PURPOSE: To study the correlation between subretinal hyperreflective material (SHRM) seen on spectral domain optical coherence tomography at baseline and visual outcomes after intravitreal bevacizumab injection in neovascular age-related macular degeneration. METHODS: Consecutive patient charts with treatment-naive center-involved neovascular age-related macular degeneration treated with 3 monthly intravitreal bevacizumab's, continued as needed, from 2011 to 2014 were reviewed...
June 20, 2017: Retina
https://www.readbyqxmd.com/read/28654629/predictors-of-one-year-visual-outcomes-after-anti-vascular-endothelial-growth-factor-treatment-for-neovascular-age-related-macular-degeneration
#4
Laurent Kodjikian, Evelyne Decullier, Eric H Souied, Adeline Roux, Gilles Aulagner, Laure Huot
PURPOSE: To determine predictors of best-corrected visual acuity (BCVA) outcomes 1 year after ranibizumab or bevacizumab treatment for neovascular age-related macular degeneration, within the French Study Group Avastin versus Lucentis for neovascular age-related macular degeneration (GEFAL). METHODS: Patients aged ≥50 years presenting subfoveal neovascular age-related macular degeneration were randomized to receive ranibizumab or bevacizumab (3 monthly intravitreal injections followed by an as-needed regimen)...
June 20, 2017: Retina
https://www.readbyqxmd.com/read/28652696/no-improvement-in-injection-frequency-or-in-visual-outcome-over-time-in-two-cohorts-of-patients-from-the-same-swedish-county-treated-for-wet-age-related-macular-degeneration
#5
Marion Schroeder, Lena Rung, Monica Lövestam-Adrian
BACKGROUND: Although ranibizumab has been used for the treatment of wet age-related macular degeneration (AMD) since 2007, real-world studies still report undertreatment resulting in a less favorable visual outcome. In this study, two different time cohorts of patients treated with ranibizumab for wet AMD in routine care were analyzed to observe whether there was a change over time regarding visual outcome, injection frequency, and quality of life (QoL). METHODS: We compared patients with treatment-naïve wet AMD in two observational follow-up cohorts 2007-2010 (n=50 patients) and 2009-2013 (n=26)...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28651595/identification-of-pathogenic-genes-and-upstream-regulators-in-age-related-macular-degeneration
#6
Bin Zhao, Mengya Wang, Jing Xu, Min Li, Yuhui Yu
BACKGROUND: Age-related macular degeneration (AMD) is the leading cause of irreversible blindness in older individuals. Our study aims to identify the key genes and upstream regulators in AMD. METHODS: To screen pathogenic genes of AMD, an integrated analysis was performed by using the microarray datasets in AMD derived from the Gene Expression Omnibus (GEO) database. The functional annotation and potential pathways of differentially expressed genes (DEGs) were further discovered by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis...
June 26, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28650925/quantitative-analysis-of-the-inner-retinal-layer-thicknesses-in-age-related-macular-degeneration-using-corrected-optical-coherence-tomography-segmentation
#7
Ilkay Kilic Muftuoglu, Hema L Ramkumar, Dirk-Uwe Bartsch, Amit Meshi, Raouf Gaber, William R Freeman
PURPOSE: To characterize inner retinal damage in patients with dry age-related macular degeneration (AMD) using high-resolution spectral domain optical coherence tomography images. METHODS: Sixty eyes of 60 patients with AMD were categorized using the Age-Related Eye Disease Study (AREDS) severity scale. Spectral domain optical coherence tomography images of these patients were quantified by manually correcting the segmentation of each retinal layer, including the retinal nerve fiber layer, ganglion cell layer, and inner plexiform layer to ensure accurate delineation of layers...
June 23, 2017: Retina
https://www.readbyqxmd.com/read/28650831/new-precision-metrics-for-contrast-sensitivity-testing
#8
Michael Dorr, Tobias Elze, Wang Hui, Zhong-Lin Lu, Peter John Bex, Luis Andres Lesmes
Visual sensitivity is comprehensively described by the Contrast Sensitivity Function (CSF), but current routine clinical care does not include its assessment because of the time-consuming need to estimate thresholds for a large number of spatial frequencies. The quick CSF method, however, dramatically reduces testing times by using a Bayesian information maximization rule. We evaluate the test-retest variability of a tablet-based quick CSF implementation in a study with 100 subjects who repeatedly assessed their vision with and without optical correction...
June 26, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28648383/optical-coherence-tomography-angiography-in-dry-age-related-macular-degeneration
#9
REVIEW
Maria Vittoria Cicinelli, Alessandro Rabiolo, Riccardo Sacconi, Adriano Carnevali, Lea Querques, Francesco Bandello, Giuseppe Querques
Optical coherence tomography angiography (OCT-A) is a new imaging modality that provides non-invasive characterization and quantification of the microvasculature in different retinal conditions. The purpose of this paper is to give an updated review of the features of dry age-related macular degeneration investigated by means of new generation OCT-A. We searched PubMed and Medline using the terms "optical coherence tomography angiography" associated with "age-related macular degeneration", "drusen", "reticular pseudodrusen," and "geographic atrophy" and reviewed publications up to January, 2017...
June 22, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28647202/the-current-state-of-teleophthalmology-in-the-united-states
#10
REVIEW
Siddarth Rathi, Edmund Tsui, Nitish Mehta, Sarwar Zahid, Joel S Schuman
Telemedicine services facilitate the evaluation, diagnosis, and management of the remote patient. Telemedicine has rapidly flourished in the United States and has improved access to care, outcomes, and patient satisfaction. However, the use of telemedicine in ophthalmology is currently in its infancy and has yet to gain wide acceptance. Current models of telemedicine in ophthalmology are largely performed via "store and forward" methods, but remote monitoring and interactive modalities exist. Although studies have examined the effects of telemedicine, few reports have characterized its current status...
June 21, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28643799/appropriateness-of-quality-standards-for-meaningful-intercentre-comparisons-of-aflibercept-service-provision-for-neovascular-age-related-macular-degeneration
#11
J S Talks, P James, S Sivaprasad, R L Johnston, M McKibbin
PurposeReal-world data give different information on health-care delivery compared with randomised controlled trials. We aimed to evaluate the appropriateness of possible quality standards for intersite comparisons of outcomes of providing Aflibercept for neovascular age-related macular degeneration (nAMD) in clinical practice.Patients and methodsRetrospective data analysis from an electronic medical record. A consecutive series of treatment-naive patients initiated on aflibercept for nAMD, in the UK from March 2013 to October 2015...
June 23, 2017: Eye
https://www.readbyqxmd.com/read/28643713/tissue-plasminogen-activator-assisted-vitrectomy-for-submacular-hemorrhage-due-to-age-related-macular-degeneration
#12
Mustafa Gok, V Levent Karabaş, Mehmet S Aslan, Özgür Kara, Süleyman Karaman, Fatih Yenihayat
PURPOSE: The purpose of this study was to evaluate the treatment efficacy of vitrectomy combined with subretinal recombinant tissue plasminogen activator (r-tPA) and factors affecting visual improvement in patients with submacular hemorrhage (SMH) due to neovascular age-related macular degeneration (nAMD). MATERIALS AND METHODS: Medical records of 17 consecutive patients diagnosed with SMH secondary to nAMD were retrospectively reviewed. The initial surgical procedure involved a 23-gauge transconjunctival vitrectomy, subretinal r-tPA application through a self-sealing inferior retinotomy, and sulfur hexafluoride gas for tamponade in all patients...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643712/comparison-of-macular-pigment-optical-density-in-patients-with-dry-and-wet-age-related-macular-degeneration
#13
Ayhan Ozyurt, Nilufer Kocak, Pınar Akan, Ozlem Gursoy Calan, Taylan Ozturk, Mahmut Kaya, Eyup Karahan, Suleyman Kaynak
AIM: The aim of the study was to evaluate the macular pigment optical density (MPOD) levels in patients with wet age-related macular degeneration (AMD), dry AMD, and also in healthy controls. SETTINGS AND DESIGN: This study was conducted at Department of Ophthalmology, and the study design was a prospective study. PATIENTS AND METHODS: Forty-eight patients with wet AMD, 51 patients with dry AMD, and 50 controls were included in the study. All patients were naive to both previous lutein or zeaxanthin administration and any previous intravitreal injections...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643176/a-promising-tool-in-retina-regeneration-current-perspectives-and-challenges-when-using-mesenchymal-progenitor-stem-cells-in-veterinary-and-human-ophthalmological-applications
#14
REVIEW
Anna Cislo-Pakuluk, Krzysztof Marycz
Visual impairment is a common ailment of the current world population, with more exposure to CCD screens and fluorescent lighting, approximately 285 billion people suffer from this deficiency and 13% of those are considered clinically blind. More common causes for visual impairment include age-related macular degeneration (AMD), glaucoma and diabetic retinopathy (Zhu et al. Molecular Medicine Reports, 2015; Kolb et al. 2007; Machalińska et al. Current Eye Research, 34(9),748-760, 2009) among a few. As cases of retinal and optic nerve diseases rise, it is vital to find a treatment, which has led to investigation of the therapeutic potential of various stem cells types (Bull et al...
June 22, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28641461/the-impact-of-data-errors-on-the-outcome-of-randomized-clinical-trials
#15
Marc Buyse, Pierre Squifflet, Elisabeth Coart, Emmanuel Quinaux, Cornelis Ja Punt, Everardo D Saad
Background/aims Considerable human and financial resources are typically spent to ensure that data collected for clinical trials are free from errors. We investigated the impact of random and systematic errors on the outcome of randomized clinical trials. Methods We used individual patient data relating to response endpoints of interest in two published randomized clinical trials, one in ophthalmology and one in oncology. These randomized clinical trials enrolled 1186 patients with age-related macular degeneration and 736 patients with metastatic colorectal cancer...
June 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
https://www.readbyqxmd.com/read/28637922/targeting-factor-d-of-the-alternative-complement-pathway-reduces-geographic-atrophy-progression-secondary-to-age-related-macular-degeneration
#16
Brian L Yaspan, David F Williams, Frank G Holz, Carl D Regillo, Zhengrong Li, Amy Dressen, Menno van Lookeren Campagne, Kha N Le, Robert R Graham, Tatiana Beres, Tushar R Bhangale, Lee A Honigberg, Ashley Smith, Erin C Henry, Carole Ho, Erich C Strauss
Geographic atrophy is an advanced form of age-related macular degeneration (AMD) and a leading cause of vision loss for which there are no approved treatments. Genetic studies in AMD patients have implicated dysregulation of the alternative complement pathway in the pathogenesis of geographic atrophy. Lampalizumab is a potential therapeutic that targets complement factor D, a pivotal activator of the alternative complement pathway. The MAHALO phase 2 clinical trial was a multicenter, randomized, controlled study that evaluated lampalizumab administered by intravitreal injection monthly (n = 42) and every other month (n = 41) versus sham control (n = 40) in patients with geographic atrophy secondary to AMD...
June 21, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28637873/disease-linked-mutations-in-factor-h-reveal-pivotal-role-of-cofactor-activity-in-self-surface-selective-regulation-of-complement-activation
#17
Heather Kerr, Edwin Wong, Elisavet Makou, Yi Yang, Kevin Marchbank, David Kavanagh, Anna Richards, Andrew P Herbert, Paul N Barlow
Spontaneous activation enables the complement system to respond very rapidly to diverse threats. Activation is efficiently suppressed by complement factor H (CFH) on self surfaces but not foreign surfaces. The surface selectivity of CFH, a soluble protein containing 20 CCP modules (CCPs 1-20), may be compromised by disease-linked mutations. Which of the several functions of CFH drives its self-surface selectivity remains unknown. We made human CFH mutants in Pichia pastoris. In benchmark studies of CCP-1 variants, recombinant I62-CFH (protective against age-related macular degeneration) and V62-CFH functioned equivalently, matching or outperforming plasma-derived CFH while R53H-CFH, linked to atypical haemolytic uraemic syndrome (aHUS), was defective in C3bBb decay-accelerating activity (DAA) and factor I-cofactor activity (CA)...
June 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28637435/association-between-polymorphism-rs11200638-in-the-htra1-gene-and-the-response-to-anti-vegf-treatment-of-exudative-amd-a-meta-analysis
#18
Ya-Li Zhou, Chun-Li Chen, Yi-Xiao Wang, Yao Tong, Xiao-Ling Fang, Lin Li, Zhao-Yang Wang
BACKGROUND: Anti-angiogenesis treatments are the most commonly used treatments for the vision loss caused by exudative age-related macular degeneration (AMD), in which the anti-vascular endothelial growth factor (VEGF) drugs with ranibizumab and bevacizumab are current standard treatments. However, the outcome of anti-VEGF therapeutics is not uniform in all patients. METHODS: We performed a literature-based meta-analysis including, five published studies relevant to HTRA1 and response to anti-VEGF treatment (bevacizumab or ranibizumab)...
June 21, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28635422/metallothionein-polymorphisms-in-a-northern-spanish-population-with-neovascular-and-dry-forms-of-age-related-macular-degeneration
#19
Montserrat García, Lydia Álvarez, Ángela Fernández, Héctor González-Iglesias, Julio Escribano, Beatriz Fernández-Vega, Eva Villota, Luis Fernández-Vega Cueto, Álvaro Fernández-Vega, Miguel Coca-Prados
BACKGROUND: To elucidate the potential role of single nucleotide polymorphisms (SNPs) in the metallothionein (MT) genes in Northern Spanish patients with age-related macular degeneration (AMD). METHODS: A total of 130 unrelated Northern Spanish natives diagnosed with AMD (46 dry, 35 neovascular, and 49 mixed) and 96 healthy controls, matched by age and ethnicity, were enrolled in a case-control study. DNA was isolated from peripheral blood and genotyped for 14 SNPs located at 5 MT genes (MT1A: rs11076161, rs 11640851, rs8052394, and rs7196890; MT1B: rs8052334, rs964372, and rs7191779; MT1M: rs2270836 and rs9936741; MT2A: rs28366003, rs1610216, rs10636, and rs1580833; MT3: rs45570941) using TaqMan probes...
March 1, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28633153/association-between-visual-function-and-subretinal-drusenoid-deposits-in-normal-and-early-age-related-macular-degeneration-eyes
#20
David Neely, Anna V Zarubina, Mark E Clark, Carrie E Huisingh, Gregory R Jackson, Yuhua Zhang, Gerald McGwin, Christine A Curcio, Cynthia Owsley
PURPOSE: To examine the association between subretinal drusenoid deposits (SDDs) identified by multimodal retinal imaging and visual function in older eyes with normal macular health or in the earliest phases of age-related macular degeneration (AMD). METHODS: Age-related macular degeneration status for each eye was defined according to the Age-Related Eye Disease Study (AREDS) 9-step classification system (normal = Step 1, early AMD = Steps 2-4) based on color fundus photographs...
July 2017: Retina
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