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Retinal occlusion

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https://www.readbyqxmd.com/read/29156466/-retinal-artery-occlusions
#1
Gabriele E Lang, Stefan J Lang
Retinal artery occlusions are acute vascular diseases. Very often they are caused by an embolisation. Rarely a thrombosis is caused by an arteriitis. In the acute phase diagnosis in most of the cases can be made by ophthalmoscopy due to the whitish retinal edema and in central retinal artery occlusion the cherry red spot. Difficulties in making the diagnosis can occur in the chronic stage, especially after reperfusion of the retinal vessels, when the fundus colour returned to normal again. Several diagnostic procedures help to make the diagnosis...
November 20, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29155696/safety-of-consecutive-same-day-bilateral-intravitreal-dexamethasone-implant-ozurdex
#2
Kapil G Kapoor, James B Colchao
PURPOSE: The objective of this study was to evaluate patient safety and tolerance of consecutive bilateral intravitreal dexamethasone (Ozurdex) injections during a single visit for the treatment of cystoid macular edema secondary to retinal vein occlusion, diabetic macular edema, or noninfectious posterior uveitis. METHODS: This was a retrospective single-center institutional review board-approved study from March 1, 2013, through August 1, 2016. All patients had a complete ophthalmologic examination and optical coherence tomography imaging...
November 16, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29146987/homocysteine-in-retinal-artery-occlusive-disease-a-meta-analysis-of-cohort-studies
#3
Xuetao Huang, Yezhen Yang, Yiqin Duan, Yi-Qun Kuang, Ding Lin
Few studies have reported the relationship between retinal artery occlusion (RAO) and plasma homocysteine (Hcy) levels. Our goal was to evaluate the association between the plasma Hcy level and the risk of RAO disease. Several databases were searched for all published studies that involved Hcy and RAO. Six studies evaluated hyperhomocysteinemia (hHcy) in retinal artery occlusion patients and controls; the incidence of hHcy in patients with RAO was higher than the control and the pooled odds ratio (OR) was 6...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29136662/protective-effect-of-metformin-against-retinal-vein-occlusions-in-diabetes-mellitus-a-nationwide-population-based-study
#4
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/29133663/combined-central-retinal-artery-and-vein-occlusion-with-optic-perineuritis-following-herpes-zoster-dermatitis-in-an-immunocompetent-child
#5
Reema Bansal, Ramandeep Singh, Aastha Takkar, Vivek Lal
A 15-year-old healthy boy developed acute, rapidly progressing visual loss in left eye following herpes zoster dermatitis, with a combined central retinal artery occlusion (CRAO) and central retinal vein occlusion (CRVO), along with optic perineuritis. Laboratory tests were negative. Despite an empirical, intensive antiviral treatment with systemic corticosteroids, and vision could not be restored in the affected eye. Herpes zoster dermatitis, in an immunocompetent individual, may be associated with a combined CRAO and CRVO along with optic perineuritis, leading to profound visual loss...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29133654/-dye-front-reciprocation-in-combined-central-retinal-vein-occlusion-with-cilioretinal-artery-infarction
#6
Raghav Ravani, Rohan Chawla, Shreyans Jain, Atul Kumar
No abstract text is available yet for this article.
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29127134/radiation-retinopathy-treated-successfully-with-aflibercept
#7
Pakinee Pooprasert, Tafadzwa Young-Zvandasara, Ayad Al-Bermani
Aflibercept (aflibercept) is a novel anti-vascular endothelial growth factor drug indicated for wet age-related macular degeneration and macular oedema secondary to retinal vein occlusion and diabetic macular oedema. While only newly introduced on the market, it is growing in popularity and over 5.5 million doses have been prescribed worldwide. Due to its versatile mechanism, it is indicated for numerous eye pathologies, and in particular, has been adapted to treat various types of retinopathy. To our knowledge, this is the first case report of solely using aflibercept to treat cystoid macular oedema in radiation retinopathy...
November 9, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29126927/mechanisms-of-macular-edema-beyond-the-surface
#8
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/29121367/idiopathic-retinal-vasculitis-aneurysms-and-neuroretinitis-syndrome-presenting-with-branch-retinal-artery-occlusion
#9
Jennifer A Zacharia, Adam T Chin, Carl B Rebhun, Ricardo N Louzada, Mehreen Adhi, Emily D Cole, Carlos Moreira-Neto, Nadia K Waheed, Jay S Duker
Idiopathic retinal vasculitis, aneurysms, and neuroretinitis (IRVAN) is a rare syndrome affecting the retinal and optic disc vasculature. Diffuse retinal ischemia, macular edema, and neovascularization may lead to bilateral vision loss. The authors report a case of a 36-year-old woman presenting with branch retinal artery occlusion (BRAO) in her right eye who was subsequently diagnosed with IRVAN syndrome. She was treated with panretinal photocoagulation for peripheral retinal ischemia and pars plana vitrectomy for vitreous hemorrhage...
November 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29120976/case-report-masquerading-large-vessel-giant-cell-arteritis
#10
Paul Jacquier, Raphael Wuarin, Carlo Chizzolini, Gabriele Thumann, Heimo Steffen, Argyrios Chronopoulos
SIGNIFICANCE: Large-vessel giant cell arteritis (GCA) can be a diagnostic dilemma for the eye care provider because it may not involve the typical cranial arteries. When any of its potential ocular complications are diagnosed, it is important to consider this unusual form of GCA. PURPOSE: To report an unusual ophthalmic presentation of large-vessel GCA with sequential bilateral anterior ischemic optic neuropathy and branch retinal artery occlusion. METHODS: A 65-year-old previously healthy woman experienced sequential bilateral anterior ischemic optic neuropathy with branch retinal artery occlusion in the absence of other signs and symptoms suggestive of cranial GCA...
November 9, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
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
#11
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/29118503/inadvertent-intralenticular-dexamethasone-implant-1-year-follow-up-and-management
#12
Cagatay Caglar
We report the case of a 72-year-old female who developed macular edema (ME) due to hemicentral retinal vein occlusion in her right eye. A dexamethasone implant was inadvertently injected into the crystalline lens. The patient was followed without repositioning of the dexamethasone implant during the 12 months. Besides, the posterior subcapsular cataract and ME had progressed significantly; hence, cataract extraction and intravitreal ranibizumab injection were performed in the same session. A three-piece intraocular lens was implanted in the sulcus with optic captured, and then intravitreal ranibizumab injection was performed...
September 2017: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/29107469/diseases-of-the-retina-and-the-optic-nerve-associated-with-obstructive-sleep-apnea
#13
REVIEW
Marielle Mentek, Florent Aptel, Diane Godin-Ribuot, Renaud Tamisier, Jean-Louis Pepin, Christophe Chiquet
Many associations between ocular disorders and obstructive sleep apnea (OSA) have been studied, such as nonarteritic anterior ischemic optic neuropathy, glaucoma, papilledema, retinal vein occlusion, eyelid hyperlaxity, lower-eyelid ectropion and recurrent corneal erosions. The objective of this review is to synthetize the possible vascular disorders of the retina and the optic nerve associated with sleep apnea patients and to discuss the underlying pathophysiological hypotheses. Main mechanisms involved in the ocular complications of OSA are related to intermittent hypoxia, sympathetic system activation, oxidant stress, and deleterious effects of endothelin 1...
May 29, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29099501/efficacy-and-timing-of-adjunctive-therapy-in-the-anti-vegf-treatment-regimen-for-macular-oedema-in-retinal-vein-occlusion-12-month-real-world-result
#14
P L Lip, P Cikatricis, A Sarmad, E M Damato, R Chavan, A Mitra, S Elsherbiny, Y Yang, B Mushtaq
PurposeVarious combination treatment regimens have been tried to improve the short-term efficacy of intravitreal monotherapy for the treatment of macular oedema (MO) secondary to retinal vein occlusion (RVO). Our study introduces the RandOL protocol (Ranibizumab and Ozurdex with Laser photocoagulation) of initial anti-VEGF therapy, controlling recurrent non-ischaemic MO with an intravitreal steroid and applying laser therapy to non-perfused retina. We describe our 12-month follow-up experience on timing for adjunctive therapy and real-world effectiveness and safety data...
November 3, 2017: Eye
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
#15
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/29098101/a-new-side-effect-of-intravitreal-dexamethasone-implant-ozurdex%C3%A2
#16
Erdem Eris, Gurkan Erdogan, Irfan Perente, Gokhan Demir, Burcin Kepez Yildiz, Ebru Demet Aygit
Dexamethasone implant, 0,7 mg (Ozurdex, Allergan, Inc., Irvine, CA, USA), is drug mostly used in the treatment of the diabetic macular edema and edema related to retinal vein occlusion. By reporting this case we aimed to report a new side effect of 0.7 mg intravitreal dexamethasone implant that has not been reported in the literature before.
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/29095716/intracameral-antibiotics-during-cataract-surgery-evidence-and-barriers
#17
Aravind Haripriya, David F Chang
PURPOSE OF REVIEW: There is continuing debate regarding the safety, efficacy, and necessity of intracameral antibiotics to prevent postoperative endophthalmitis. We summarize the most recent evidence-based publications that either support or caution against this practice. RECENT FINDINGS: Several additional large, international retrospective clinical studies found a significant reduction in endophthalmitis rates with intracameral antibiotic prophylaxis. Many surgeons are looking for alternatives to vancomycin for intracameral prophylaxis because of its association with the rare but sight-threatening complication of hemorrhagic occlusive retinal vasculitis...
October 31, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/29095359/minimal-optical-coherence-tomography-b-scan-density-for-reliable-detection-of-intraretinal-and-subretinal-fluid-in-macular-diseases
#18
Petra P Fang, Niklas Domdei, Philipp Herrmann, Steffen Schmitz-Valckenberg, Frank G Holz, Wolf M Harmening, Tim U Krohne
PURPOSE: To determine the minimal optical coherence tomography B-scan density for reliable detection of intraretinal and subretinal fluid. METHODS: Spectral domain optical coherence tomography raster scanning (Spectralis; Heidelberg Engineering, Heidelberg, Germany) using a scan field of 20° × 20° of 97 B-scans with an interscan distance (ISD) of 60 μm was performed in 150 eyes of 150 consecutive patients at monitoring visits for intravitreal anti-vascular endothelial growth factor therapy...
October 30, 2017: Retina
https://www.readbyqxmd.com/read/29095262/diurnal-variation-of-pulse-waveform-parameters-determined-by-laser-speckle-flowgraphy-on-the-optic-nerve-head-in-healthy-subjects
#19
Marie Fukami, Takeshi Iwase, Kentaro Yamamoto, Eimei Ra, Kenta Murotani, Hiroko Terasaki
To investigate the diurnal variation of the pulse waveform parameters determined by laser speckle flowgraphy (LSFG) on the optic nerve head (ONH) in healthy subjects.This prospective cross sectional study was conducted at Nagoya University Hospital. We studied 13 healthy volunteers whose mean age was 33.5 ± 7.6 years. Eight pulse waveform parameters on the ONH were determined by LSFG (LSFG-NAVI) every 3 hours from 6 AM to 12 PM. The intraocular pressure (IOP), systolic (SBP) and diastolic (DBP) blood pressure, and heart rate (HR) in the brachial artery were also recorded...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29094327/reduced-light-sensitivity-due-to-impaired-retinal-perfusion-in-branch-retinal-vein-occlusion
#20
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
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