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https://www.readbyqxmd.com/read/29136662/protective-effect-of-metformin-against-retinal-vein-occlusions-in-diabetes-mellitus-a-nationwide-population-based-study
#1
Tai-Chi Lin, De-Kuang Hwang, Chih-Chien Hsu, Chi-Hsien Peng, Mong-Lien Wang, Shih-Hwa Chiou, Shih-Jen Chen
Previous studies have found that metformin can reduce cardiovascular risk, but its association with retinal vein occlusion (RVO) is unknown. In this population-based cohort study using the Taiwan National Health Insurance Research Database (NHIRD), we demonstrated the protective effect of metformin against RVO in diabetes mellitus (DM) and explored the incidence rate and factors associated with RVO development in general and diabetic populations. One million patients were randomly selected from the registry files of the NHIRD, and all their claims data were collected for the 1996-2011 period...
2017: PloS One
https://www.readbyqxmd.com/read/29126927/mechanisms-of-macular-edema-beyond-the-surface
#2
REVIEW
Alejandra Daruich, Alexandre Matet, Alexandre Moulin, Laura Kowalczuk, Michaël Nicolas, Alexandre Sellam, Pierre-Raphaël Rothschild, Samy Omri, Emmanuelle Gélizé, Laurent Jonet, Kimberley Delaunay, Yvonne De Kozak, Marianne Berdugo, Min Zhao, Patricia Crisanti, Francine Behar-Cohen
Macular edema consists of intra- or subretinal fluid accumulation in the macular region. It occurs during the course of numerous retinal disorders and can cause severe impairment of central vision. Major causes of macular edema include diabetes, branch and central retinal vein occlusion, choroidal neovascularization, posterior uveitis, postoperative inflammation and central serous chorioretinopathy. The healthy retina is maintained in a relatively dehydrated, transparent state compatible with optimal light transmission by multiple active and passive systems...
November 7, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/29119239/safety-and-efficacy-of-dexamethasone-intravitreal-implant-for-treatment-of-macular-edema-secondary-to-retinal-vein-occlusion-in-chinese-patients-randomized-sham-controlled-multicenter-study
#3
Xiaoxin Li, Ningli Wang, Xiaoling Liang, Gezhi Xu, Xiao-Yan Li, Jenny Jiao, Jean Lou, Yehia Hashad
PURPOSE: The purpose of this study was to evaluate the safety and efficacy of dexamethasone intravitreal implant 0.7 mg (DEX) for treatment of macular edema associated with retinal vein occlusion (RVO). METHODS: This study was a six-month, randomized, double-masked, sham-controlled, multicenter, phase 3 clinical trial with a 2-month open-label study extension. Patients with branch or central RVO received DEX (n = 129) or sham procedure (n = 130) in the study eye at baseline; all patients who met re-treatment criteria received DEX at month 6...
November 8, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29109883/nd-yag-laser-photodisruption-for-multilevel-premacular-hemorrhage-due-to-isolated-retinal-venous-macroaneurysm
#4
Kenan Sonmez, Pehmen Y Ozcan
A 55-year-old man presented with sudden deterioration of vision in the right eye. His visual acuity was reduced to hand motion because of a large multilevel premacular hemorrhage. Nd:YAG laser was performed to drain the entrapped hemorrhage under the internal limiting membrane (ILM) and posterior hyaloid face in the macula into the vitreous. Immediately after laser treatment, streaming of red blood cells into the vitreous gel through the perforation site was observed. At the first-month follow-up, BCVA improved to 20/25 and ILM wrinkling was observed at the macula where the preretinal hemorrhage cleared...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29098298/photocoagulation-of-the-retinal-nonperfusion-area-prevents-the-expression-of-the-vascular-endothelial-growth-factor-in-an-animal-model
#5
Makoto Gozawa, Yoshihiro Takamura, Seiji Miyake, Takehiro Matsumura, Masakazu Morioka, Yutaka Yamada, Masaru Inatani
Purpose: The purpose of this study was to evaluate whether photocoagulation of the retinal nonperfusion area suppresses ocular vascular endothelial growth factor (VEGF) expression in a rabbit retinal vein occlusion (RVO) model. Methods: The retinas of pigmented rabbits were made ischemic by a laser on the main branch of retinal veins following intravenous injection of Rose Bengal. The eyes were enucleated before treatment and at 1, 7, and 14 days after laser occlusion...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29094327/reduced-light-sensitivity-due-to-impaired-retinal-perfusion-in-branch-retinal-vein-occlusion
#6
Hiroyuki Iijima
PURPOSE: To study the reduction in light sensitivity in areas where impaired retinal perfusion was established by fluorescein angiogram (FA) in eyes with branch retinal vein occlusion (BRVO) that recovered from retinal edema and hemorrhage. DESIGN: Retrospective observational case series. METHODS: A study of the reduction in light sensitivity demonstrated by total deviation display of the Humphrey perimetry program 30-2 in 43 eyes from 42 patients with BRVO, whose perfusion status was assessed by FA images taken at least 6 months after disease onset...
November 1, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29090058/central-retinal-vein-occlusion-like-appearance-a-precursor-stage-in-evolution-of-frosted-branch-angiitis
#7
Babulal Kumawat, Koushik Tripathy, Pradeep Venkatesh, Rohan Chawla, Yog Raj Sharma
PURPOSE: To report a young man with a central retinal vein occlusion (CRVO)-like appearance which later evolved to frosted branch angiitis (FBA). CASE REPORT: As 28-year-old Indian man presented with optic disc swelling, hyperemia, peripapillary hemorrhages, and dilated tortuous veins in the left eye, 6 months after being diagnosed with idiopathic FBA in the right eye. Within 3 days of presentation, the left eye developed FBA, which was promptly and successfully treated with oral steroids...
October 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29067224/combined-central-retinal-vein-and-branch-retinal-artery-occlusion-post-intense-physical-activity
#8
Mircea Coca, Nahom Tecle, Wendewessen Amde, Ankur Mehta
We report a case of combined central retinal vein occlusion and branch retinal artery occlusion. A previously healthy 47-year-old male presented with decreased vision in the right eye after completing a half marathon. A fundus exam and retinal imaging revealed a combined central retinal vein and branch retinal artery occlusion. In the present report, we review the literature and discuss the possible mechanisms behind combined retinal vessel occlusions. To our knowledge, this is the first reported case of combined central retinal vein occlusion and branch retinal artery occlusion following intense exercise...
August 23, 2017: Curēus
https://www.readbyqxmd.com/read/29020423/noninvasive-high-resolution-functional-macular-imaging-in-subjects-with-retinal-vein-occlusion
#9
Thalmon R Campagnoli, Gábor Márk Somfai, Jing Tian, Delia Cabrera DeBuc, William E Smiddy
BACKGROUND AND OBJECTIVES: Several imaging modalities have been developed to characterize ischemia inherent in retinal vascular diseases. This study aims to predict the impact and to better establish the mechanisms of visual deterioration. A high-resolution functional imaging device is used, yielding quantitative data for macular blood flow and capillary network features in healthy eyes and in eyes with central retinal vein occlusion (CRVO) or branch retinal vein occlusion (BRVO). PATIENTS AND METHODS: This prospective, cross-sectional, comparative case series measured blood flow velocities (BFVs) and noninvasive capillary perfusion maps (nCPMs) in macular vessels in patients with BRVO/CRVO and in healthy controls using the Retinal Function Imager (RFI; Optical Imaging, Rehovot, Israel)...
October 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28949790/the-effect-of-age-and-initial-central-retinal-thickness-on-earlier-need-of-repeat-ozurdex-treatment-for-macular-edema-due-to-retinal-vein-occlusion-a-retrospective-case-series
#10
Chun-Ju Lin, Huan-Sheng Chen, Cheng-Wen Su, Peng-Tai Tien, Jane-Ming Lin, Wen-Lu Chen, Chung-Yuan Kuo, Chun-Ting Lai, Yi-Yu Tsai
PURPOSE: To evaluate the effects of dexamethasone intravitreal implant (Ozurdex) and identify risk factors for repeated treatment in patients with macula edema due to branch retinal vein occlusion (BRVO) or central retinal vein occlusion (CRVO). METHODS: Patients followed up for at least 6 months were enrolled from 2013 to 2016. Dexamethasone intravitreal implant was given as the baseline treatment. For evaluation of dexamethasone intravitreal implant effects and complications, the demographics, medical history, best-corrected visual acuity (BCVA), intraocular pressure, and central retinal thickness (CRT) were recorded...
September 26, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28931295/-two-year-follow-up-results-of-patients-with-macular-oedema-due-to-retinal-vein-occlusion-treated-with-ranibizumab
#11
Z Hladíková, E Klofáčová, B Kalvodová
PURPOSE: To evaluate 2-year follow-up results of patients with macular oedema (ME) caused by central (CRVO) and branch (BRVO) retinal vein occlusion treated with intravitreal ranibizumab at the Department of Ophthalmology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic. METHODS: Retrospective study. RESULTS: The 2-year follow-up was completed by 18 patients with ME caused by CRVO and 16 patients with ME caused by BRVO...
2017: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/28925736/chronological-changes-in-tip-cells-during-sprouting-angiogenesis-of-development-of-the-retinal-vasculature-in-newborn-mice
#12
Chang Sik Cho, Sang-Mok Lee, Byung Joo Lee, Dong Hyun Jo, Jin Hyoung Kim, Jeong Hun Kim, Young Suk Yu
PURPOSE: To investigate a sequential chronological change in tip cells during the development of the retinal vasculature in newborn mice. MATERIALS AND METHODS: Newborn C57BL/6 mice were used for this study. To elucidate the patterns in the developing retinal vasculature, histology, and immunohistochemistry-antiplatelet endothelial cell adhesion molecule-1, anticollagen type IV, isolectin IB4-were performed on sections of mouse retina on postnatal days (P)-4, -8, and -12...
November 2017: Current Eye Research
https://www.readbyqxmd.com/read/28924434/ruptured-retinal-arterial-macroaneurysm-secondary-to-toxoplasmic-kyrieleis-arteriolitis-a-case-report
#13
Natalie Huang, W Andrew Lee, Sean Rivera, Sandra R Montezuma
PURPOSE: The aim of this report was to describe multimodal ocular imaging findings in a patient who presented with a ruptured retinal arterial macroaneurysm (RAM) associated with toxoplasmic Kyrieleis arteriolitis. METHODS: We report the case of a 64-year-old man with a history of systemic hypertension and dense amblyopia of the left eye who presented with decreased vision and new floaters in the left eye. Color fundus photography, spectral-domain optical coherence tomography, fluorescein angiography, and indocyanine green angiography were used as diagnostic imaging tools...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28922697/low-frequency-ranibizumab-versus-dexamethasone-implant-for-macular-oedema-secondary-to-branch-retinal-vein-occlusion
#14
Bora Yuksel, Omer Karti, Ozan Celik, Suleyman Gokhan Kerci, Tuncay Kusbeci
BACKGROUND: The aim was to make a real-world comparison of the efficacy of ranibizumab, dexamethasone and grid laser treatments in macular oedema due to branch retinal vein occlusion (BRVO). METHODS: Forty-four eyes of 44 consecutive patients with macular oedema secondary to BRVO were included. Treatment arms comprised standard care (StCARE, n = 15), intravitreal ranibizumab (RNB, n = 14) and dexamethasone implant (DEX, n = 15). No rescue laser was performed in DEX and RNB groups...
September 18, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28916115/-retinal-vein-occlusions
#15
REVIEW
A Pierru, J-F Girmens, E Héron, M Paques
Retinal venous occlusions comprise central retinal vein occlusion, hemiretinal vein occlusions, and branch retinal vein occlusions. They are associated with arterial hypertension and glaucoma. Retinal vein occlusions occur more frequently in males, at a median age of 55. The pathogenesis of retinal venous occlusions remains obscure. The clinical presentation of the disease is variable. In most cases, there is a unilateral visual loss over days with a painless, white and quiet eye. However, retinal venous occlusions may also present as an abrupt and profound loss of vision, or be asymptomatic...
October 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28898259/association-between-retinal-vein-occlusion-and-an-increased-risk-of-acute-myocardial-infarction-a-nationwide-population-based-follow-up-study
#16
Yu-Yen Chen, Shwu-Jiuan Sheu, Hsiao-Yun Hu, Dachen Chu, Pesus Chou
OBJECTIVE: To investigate a possible association between retinal vein occlusion (RVO) and an increased risk of developing acute myocardial infarction (AMI). DESIGN: A population-based retrospective cohort study using the entire population of the Taiwan National Health Insurance Research Database (NHIRD) from 1st January, 2001 to 31st December, 2013. METHODS: A total of 37921 subjects with RVO were enrolled in the RVO group, and 113763 subjects without RVO were enrolled in the comparison group...
2017: PloS One
https://www.readbyqxmd.com/read/28865424/prevalence-pattern-and-risk-factors-of-retinal-vein-occlusion-in-an-elderly-population-in-nepal-the-bhaktapur-retina-study
#17
Raba Thapa, Sanyam Bajimaya, Govinda Paudyal, Shankar Khanal, Stevie Tan, Suman S Thapa, Ger van Rens
BACKGROUND: This study aims to explore the prevalence, pattern and risk factors of retinal vein occlusion (RVO) in an elderly population of Nepal. METHOD: One thousand eight hundred sixty subjects of age 60 years and above were enrolled in a population-based, cross-sectional study. Detailed history, visual acuity, anterior segment and posterior segment examinations were done. Blood pressure, non-fasting blood sugar, body mass index and abdominal girth were measured...
September 2, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28860707/widening-use-of-dexamethasone-implant-for-the-treatment-of-macular-edema
#18
REVIEW
Vincenza Bonfiglio, Michele Reibaldi, Matteo Fallico, Andrea Russo, Alessandra Pizzo, Stefano Fichera, Carlo Rapisarda, Iacopo Macchi, Teresio Avitabile, Antonio Longo
Sustained-release intravitreal 0.7 mg dexamethasone (DEX) implant is approved in Europe for the treatment of macular edema related to diabetic retinopathy, branch retinal vein occlusion, central retinal vein occlusion, and non-infectious uveitis. The implant is formulated in a biodegradable copolymer to release the active ingredient within the vitreous chamber for up to 6 months after an intravitreal injection, allowing a prolonged interval of efficacy between injections with a good safety profile. Various other ocular pathologies with inflammatory etiopathogeneses associated with macular edema have been treated by DEX implant, including neovascular age-related macular degeneration, Irvine-Gass syndrome, vasoproliferative retinal tumors, retinal telangiectasia, Coats' disease, radiation maculopathy, retinitis pigmentosa, and macular edema secondary to scleral buckling and pars plana vitrectomy...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28856036/optical-coherence-tomography-angiography-of-retinal-vascular-occlusions-produced-by-imaging-guided-laser-photocoagulation
#19
Brian T Soetikno, Xiao Shu, Qi Liu, Wenzhong Liu, Siyu Chen, Lisa Beckmann, Amani A Fawzi, Hao F Zhang
Retinal vascular occlusive diseases represent a major form of vision loss worldwide. Rodent models of these diseases have traditionally relied upon a slit-lamp biomicroscope to help visualize the fundus and subsequently aid delivery of high-power laser shots to a target vessel. Here we describe a multimodal imaging system that can produce, image, and monitor retinal vascular occlusions in rodents. The system combines a spectral-domain optical coherence tomography system for cross-sectional structural imaging and three-dimensional angiography, and a fluorescence scanning laser ophthalmoscope for Rose Bengal monitoring and high-power laser delivery to a target vessel...
August 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28853639/acute-vision-loss-in-systemic-lupus-erythematosus-bilateral-combined-retinal-artery-and-vein-occlusion-as-a-catastrophic-form-of-clinical-flare
#20
M Akhlaghi, B Abtahi-Naeini, M Pourazizi
Presentation of a combination of branch retinal artery occlusion (BRAO)/central retinal artery occlusion (CRAO) and central retinal vein occlusion (CRVO) in systemic lupus erythematosus (SLE) is extremely rare. Herein, we have presented the case of a 29-year-old female with SLE, who simultaneously developed bilateral CRVO and BRAO/CRAO in the absence of antiphospholipid syndrome (APS) as a catastrophic form of clinical flare. A combinatorial diagnosis of CRVO and BRAO/CRAO should be considered during clinical flare-up in a patient with SLE who presents with rapidly progressive visual loss...
January 1, 2017: Lupus
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