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Retinal vein occlusion

Sergio Crespo-Garcia, Nadine Reichhart, Sergej Skosyrski, Marco Foddis, Jim Wu, Aleksandar Figura, Christina Herrspiegel, Martina Füchtemeier, Celeste Sassi, Ulrich Dirnagl, Antonia M Joussen, Olaf Strauss
Animal models of disease are an indispensable element in our quest to understand pathophysiology and develop novel therapies. Ex vivo studies have severe limitations, in particular their inability to study individual disease progression over time. In this respect, non-invasive in vivo technologies offer multiple advantages. We here used bilateral common carotid artery occlusion (BCCAO) in mice, an established model for ischemic retinopathy, and performed a multimodal in vivo and ex vivo follow-up. We used scanning laser ophthalmoscopy (SLO), ocular coherence tomography (OCT) and electroretinography (ERG) over 6 weeks followed by ex vivo analyses...
2018: PloS One
Taiji Hasegawa, Sakura Murakawa, Ichiro Maruko, Akiko Kogure-Katakura, Tomohiro Iida
AIM: To determine whether there is a significant correlation between the reduction in macular vessel density and the recurrence of macular oedema in eyes with branch retinal vein occlusion (BRVO). METHODS: We reviewed the medical records of 27 eyes with macular oedema associated with BRVO. All eyes had received pro re nata intravitreal ranibizumab (IVR) injection. A reinjection of ranibizumab was performed when the central foveal thickness was ≥300 µm. At 12 months, patients without additional IVR for the last 4 months were placed in the resolved group, otherwise they were placed in the recurrence group...
March 15, 2018: British Journal of Ophthalmology
Jin Qiong Zhou, Ya Xing Wang, Liang Xu, Liang Zhao, Shuang Wang, Jie Xu, Qi Sheng You, Hua Yang, Wen Bin Wei, Jost B Jonas
PURPOSE: To examine frequency and associations of retinal hemorrhages. METHODS: The population-based Beijing Eye Study included 3,468 individuals. Monoscopic fundus photographs were examined for hemorrhages. RESULTS: Retinal hemorrhages were detected in 515 eyes (429 individuals) (prevalence: 7.6%; 95% confidence interval [CI]: 7.0-8.0 per eye; 12.7%; 95% CI: 11.7-13.7 per person). Higher prevalence of retinal hemorrhages was correlated (multivariate analysis) with higher systolic blood pressure (P < 0...
March 12, 2018: Retina
Gottfried Martin, David Conrad, Bertan Cakir, Günther Schlunck, Hansjürgen T Agostini
PURPOSE: Retinal vein occlusion (RVO) has been investigated in several laser-induced animal models using pigs, rabbits and rats. However, laser-induced RVO has been rarely reported in mice, despite the impressive number of available mutants, ease of handling and cost effectiveness. The aim of this study was to further assess the feasibility of a RVO mouse model for gene expression analysis and its possible use to investigate effects of hypoxia. METHODS: C57Bl/6J mice were injected with eosin Y for photo-sensitization...
2018: PloS One
Dominika Podkowinski, Ana-Maria Philip, Wolf-Dieter Vogl, Jutta Gamper, Hrvoje Bogunovic, Bianca S Gerendas, Bilal Haj Najeeb, Sebastian M Waldstein, Ursula Schmidt-Erfurth
BACKGROUND/AIMS: To characterise neuroretinal atrophy in retinal vein occlusion (RVO). METHODS: We included patients with central/branch RVO (CRVO=196, BRVO=107) who received ranibizumab according to a standardised protocol for 6 months. Retinal atrophy was defined as the presence of an area of retinal thickness (RT) <260 µm outside the foveal centre. Moreover, the thickness of three distinct retinal layer compartments was computed as follows: (1) retinal nerve fibre layer to ganglion cell layer, (2) inner plexiform layer (IPL) to outer nuclear layer (ONL) and (3) inner segment/outer segment junction to retinal pigment epithelium...
March 6, 2018: British Journal of Ophthalmology
Lasse Jørgensen Cehofski, Anders Kruse, Sigriður Olga Magnusdottir, Alexander Nørgård Alsing, Svend Kirkeby, Bent Honoré, Henrik Vorum
A dexamethasone intravitreal implant (OZURDEX) provides an effective treatment of inflammation secondary to branch retinal vein occlusion (BRVO). Retinal proteome changes which mediate the beneficial effects of the implant remain poorly understood. To study retinal proteome changes in BRVO following an intervention with a dexamethasone (DEX) implant this study combined an experimental model of BRVO with proteomic techniques. In six Danish Landrace pigs experimental BRVO was induced in both eyes using argon laser...
March 2, 2018: Experimental Eye Research
Andrzej Grzybowski, Waldemar Elikowski, Magdalena Gaca-Wysocka
RATIONALE: To analyze cardiovascular risk factors and comorbidity of acute unilateral visual loss due to combined central retinal vein occlusion (CRVO) and cilioretinal artery occlusion (CLRAO). PATIENT CONCERNS: Among patients with retinal vein or artery occlusion hospitalized at the Department of Ophthalmology between January 2011 and August 2017, subjects with combined CRVO/CLRAO were selected. All of them underwent ophthalmologic and cardiologic examination, including fluorescein angiography, optical coherence tomography, 12-lead electrocardiogram, transthoracic and transesophageal echocardiography, carotid Doppler sonography, cerebral magnetic resonance imaging, and a panel of laboratory tests...
January 2018: Medicine (Baltimore)
John P Ansah, Victoria Koh, Dirk F de Korne, Steffen Bayer, Chong Pan, Jayabaskar Thiyagarajan, David B Matchar, Ecosse Lamoureux, Desmond Quek
INTRODUCTION: Singapore's ageing population is likely to see an increase in chronic eye conditions in the future. This study aimed to estimate the burden of eye diseases among resident Singaporeans stratified for age and ethnicity by 2040. MATERIALS AND METHODS: Prevalence data on myopia, epiretinal membrane (ERM), retinal vein occlusion (RVO), age macular degeneration (AMD), diabetic retinopathy (DR), cataract, glaucoma and refractive error (RE) by age cohorts and educational attainment from the Singapore Epidemiology of Eye Diseases (SEED) study were applied to population estimates from the Singapore population model...
January 2018: Annals of the Academy of Medicine, Singapore
Hyun Ju Kim, Han Gyul Yoon, Seong Taeck Kim
AIM: To examine the thickness of the ganglion cell-inner plexiform layer (GCIPL) in eyes with resolved macular edema (ME) in non-ischemic central retinal vein occlusion (CRVO), applying spectral-domain optical coherence tomography (SD-OCT), and its relationship with visual acuity. METHODS: The retrospective observational case-control study included 30 eyes of non-ischemic CRVO patients with resolved ME (ME eyes) after treatment, and 30 eyes of non-ischemic CRVO patients without ME (non-ME eyes)...
2018: International Journal of Ophthalmology
Sandra Rezar-Dreindl, Katharina Eibenberger, Wolf Buehl, Günther Weigert, Michael Georgopoulos, Ursula Schmidt-Erfurth, Stefan Sacu
BACKGROUND: To evaluate the change in peripheral perfusion status in patients with retinal vein occlusion (RVO) during dexamethasone treatment. METHODS: Thirty-five eyes of patients with macular oedema due to either branch or central retinal vein occlusion were included. At baseline, patients were treated with an intravitreal dexamethasone implant (Ozurdex® ) and followed until month 6. Wide-field angiographies were classified as ischaemic and nonischaemic. Peripheral nonperfusion (PNP) was determined manually by calculating the percentage of nonperfusion area in relation to the total visible retina (ischaemic index)...
February 27, 2018: Acta Ophthalmologica
Norihiko Ishizaki, Teruyo Kida, Masanori Fukumoto, Takaki Sato, Hidehiro Oku, Tsunehiko Ikeda
BACKGROUND: To describe a retrospective study of macular retinoschisis that developed long after the onset of retinal artery occlusion (RAO) using optical coherence tomography (OCT). METHODS: We describe changes in macular findings and visual acuity (VA) of 29 patients (21 males and 8 females, mean age: 66.1 ± 16.9 years) with RAO (18 branch RAOs [BRAOs] and 11 central RAOs [CRAOs] who visited Osaka Medical College Hospital over an 8-year period based on a medical chart review...
February 27, 2018: BMC Ophthalmology
Ingrid U Scott, Paul C VanVeldhuisen, Michael S Ip, Barbara A Blodi, Neal L Oden, Michael Altaweel, Daniel M Berinstein
Importance: Comparisons of monthly vs treat-and-extend anti-vascular endothelial growth factor (anti-VEGF) regimens for macular edema from central retinal vein occlusion or hemiretinal vein occlusion is needed. Objective: To compare visual acuity letter score and central subfield thickness outcomes of participants in the Study of Comparative Treatments for Retinal Vein Occlusion 2 (SCORE2) trial who then received either monthly injections or treat-and-extend (TAE) regimens of aflibercept or bevacizumab after a good response at month 6...
February 24, 2018: JAMA Ophthalmology
Akshay S Thomas, Mridul K Thomas, Avni P Finn, Sharon Fekrat
PURPOSE: To understand the relationship between baseline ischemic index (IsI) values on ultra-widefield fluorescein angiography and classification as ischemic central retinal vein occlusion (CRVO). METHODS: Single-center retrospective cohort study of CRVO patients imaged using ultra-widefield fluorescein angiography from which IsI values were calculated. An ischemic CRVO was defined as those eyes with an afferent pupillary defect and counting fingers acuity or worse or neovascularization during the first year of follow-up...
February 22, 2018: Retina
Mika Hosogi, Yuki Morizane, Yusuke Shiode, Shinichiro Doi, Fumiaki Kumase, Shuhei Kimura, Mio Hosokawa, Masayuki Hirano, Shinji Toshima, Kosuke Takahashi, Atsushi Fujiwara, Fumio Shiraga
To investigate the effectiveness of a treat-and-extend regimen (TAE) of intravitreal ranibizumab injections (IVR) for macular edema (ME) due to branch retinal vein occlusion (BRVO). We retrospectively examined 35 eyes of 35 patients with ME due to BRVO who underwent TAE for 1 year. Patients whose treatment interval extended to 12 weeks were switched to a pro re nata regimen (PRN; TAE to PRN group), while TAE was continued for patients whose treatment interval was less than 12 weeks (continued TAE group). Changes in best-corrected visual acuity (BCVA), central retinal thickness (CRT), and predictive factors for inclusion in the TAE to PRN group were analyzed...
February 2018: Acta Medica Okayama
Vanessa Andrada Păun, Zamfir-Radu Ionescu, Liliana Voinea, Monica Cîrstoiu, Alexandru Baroș, Ștefan Pricopie, Radu Ciuluvică
Ocular posterior pole modification are a pathological manifestation in complicated pregnancies, especially when pregnancy induced hypertension is present (PIH), as well as in preeclampsia (PE) or eclampsia. Nonetheless, as the pregnancy evolves, the possibility for an aggravated evolution with HELLP syndrome, disseminated intravascular coagulation, and idiopathic thrombocytopenic purpura may have an ocular manifestation that, mainly, implies a loss of visual field or acuity, that, left unattended, may constitute a permanent impairment...
April 2017: Romanian Journal of Ophthalmology
Cem Ozgonul, Vaidehi S Dedania, Cagri G Besirli
PURPOSE: To compare functional and anatomic outcomes of treatment with intravitreal aflibercept versus bevacizumab and/or ranibizumab in patients with recurrent macular edema (ME) secondary to central retinal vein occlusion (CRVO). METHODS: Retrospective, comparative case series of patients with recurrent ME in the setting of CRVO. Patients with recurrent ME received treatment with aflibercept (Group 1, G1) or bevacizumab and/or ranibizumab (Group 2, G2). Primary outcome measures were best-corrected visual acuity (BCVA) and central foveal thickness (CFT)...
February 15, 2018: Journal of Ocular Pharmacology and Therapeutics
Kerr Brogan, Monica Precup, Amanda Rodger, David Young, David Francis Gilmour
BACKGROUND: Predicting how patients with central retinal vein occlusion (CRVO) will respond to intravitreal anti-VEGF is challenging. The purpose of this study was to identify pre-treatment clinical features in CRVO that predict visual acuity (VA) following intravitreal ranibizumab. METHODS: Medical records, fundus images and optical coherence tomography (OCT) scans of treatment naïve patients with CRVO receiving PRN intravitreal ranibizumab were retrospectively reviewed...
February 9, 2018: BMC Ophthalmology
Long Su, Guannan Huang, Songtao Yin, Xia Hua, Xin Tang
BACKGROUND: The recent advancement in the management of chronic renal failure (CRF) has significantly increased the longevity of the patients, which increase the incidence of severe vitreoretinopathy. The vitrectomy is highly risky in this particular group of patients due to their systemic comorbidity. The timing surgical intervention is usually delayed because of the systemic conditions. This study is to evaluate the safety and effectiveness of 25-guage vitrectomy for severe vitreoretinopathy in the CRF patients...
February 8, 2018: BMC Ophthalmology
Hyung-Bin Lim, Jae-Yun Sung, Seung-Il Ahn, Young-Joon Jo, Jung-Yeul Kim
SIGNIFICANCE: Peripapillary retinal nerve fiber layer (RNFL) thickness measurements may be influenced by the range and severity of lesions that are observed distinctively in each retinal disease. PURPOSE: We investigated the effects of various macular (central serous chorioretinopathy, macular hole, epiretinal membrane, wet age-related macular degeneration) and retinal vascular (branch retinal vein occlusion, central retinal vein occlusion, diabetic macular edema) diseases on peripapillary RNFL thickness measurements using spectral-domain optical coherence tomography...
March 2018: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Muhammed Nurullah Bulut, Ümit Çallı, Güzide Akçay, Ulviye Kıvrak, Kezban Bulut, Yusuf Özertürk
Purpose: To investigate the effect of Ozurdex (dexamethasone intravitreal implant) on multifocal electroretinography (mfERG) findings during the treatment of macular edema secondary to the central retinal vein occlusion (CRVO). Methods: Fifteen eyes of 15 patients who were treated with Ozurdex implant due to CRVO-related macular edema were included in this study. Best corrected visual acuity (BCVA), central macular thickness (CMT), and mfERG evaluations were performed for all patients before injection of Ozurdex...
January 2018: Journal of Ophthalmic & Vision Research
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