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https://www.readbyqxmd.com/read/28700136/an-automated-framework-to-quantify-areas-of-regional-ischemia-in-retinal-vascular-diseases-with-oct-angiography
#1
Neha Anegondi, Lavanya Chidambara, Devanshi Bhanushali, Santosh G K Gadde, Naresh Kumar Yadav, Abhijit Sinha Roy
In this observational and cross-sectional study, capillary non perfusion (CNP) and vascular changes in branch retinal vein occlusion (BRVO, sample size (n) = 26) and choroidal neovascularization (CNV, n = 29) were evaluated. Subjects underwent imaging using Optical coherence tomography angiography (Angiovue™ OCTA , RTVue XR, Optovue Inc., Fremont, CA). Local fractal analysis was applied to the OCTA images of superficial, deep and choriocapillaries layer. CNP area (BRVO eyes) and vascular parameters were computed using local fractal based method...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28684050/thrombophilic-and-cardiovascular-risk-factors-for-retinal-vein-occlusion
#2
Paolo Bucciarelli, Serena M Passamonti, Francesca Gianniello, Andrea Artoni, Ida Martinelli
BACKGROUND: The role of thrombophilic and cardiovascular risk factors in different manifestations of retinal vein occlusion (RVO), i.e., central or branch RVO, and at different ages is still debated. AIMS: To evaluate the association between thrombophilic and cardiovascular risk factors and the risk of RVO (overall, separately for central and branch RVO, and at different ages). METHODS: Case-control study on 313 patients with a first objectively-confirmed RVO (216 central and 97 branch RVO) and 415 healthy individuals...
July 3, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28663838/retinal-oximetry-in-humans-using-visible-light-optical-coherence-tomography-invited
#3
Siyu Chen, Xiao Shu, Peter L Nesper, Wenzhong Liu, Amani A Fawzi, Hao F Zhang
We measured hemoglobin oxygen saturation (sO2) in the retinal circulation in healthy humans using visible-light optical coherence tomography (vis-OCT). The measurements showed clear oxygenation differences between central retinal arteries and veins close to the optic nerve head. Spatial variations at different vascular branching levels were also revealed. In addition, we presented theoretical and experimental results to establish that noises in OCT intensity followed Rice distribution. We used this knowledge to retrieve unbiased estimation of true OCT intensity to improve the accuracy of vis-OCT oximetry, which had inherently lower signal-to-nose ratio from human eyes due to safety and comfort limitations...
March 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28656342/effect-of-intravitreal-ranibizumab-on-the-ocular-circulation-of-the-untreated-fellow-eye
#4
Masahiko Sugimoto, Takayasu Nunome, Rie Sakamoto, Maki Kobayashi, Mineo Kondo
PURPOSE: To evaluate the effects of unilateral intravitreal ranibizumab (IVR) on the ocular circulation of the fellow eyes. METHODS: Fifteen eyes of 15 patients with macular edema (average age 69.6 ± 11.8 years) were studied. Eleven eyes had diabetic macular edema (DME) and four eyes had macular edema associated with a branch retinal vein occlusion. Each eye received 0.5 mg of IVR. The blood circulation on the optic nerve head of the treated and untreated eyes were determined by laser speckle flowgraphy (LSFG, Softcare Co...
June 28, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28646440/a-comparison-of-three-different-intravitreal-treatment-modalities-of-macular-edema-due-to-branch-retinal-vein-occlusion
#5
Havva Erdogan Kaldırım, Serpil Yazgan
PURPOSE: To compare the efficacy of intravitreal injection of ranibizumab, dexamethasone implant and aflibercept for the management of macular edema (ME) related to branch retinal vein occlusion (BRVO). METHODS: This retrospective and comparative study included 62 eyes of 62 patients with BRVO and ME. Patients received one of the following treatments: 0.5 mg ranibizumab (group 1, n = 22), 0.7 mg dexamethasone implant (group 2, n = 20) and 2 mg aflibercept (group 3, n = 20)...
June 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28639290/comparison-between-anti-vegf-therapy-and-corticosteroid-or-laser-therapy-for-macular-oedema-secondary-to-retinal-vein-occlusion-a-meta-analysis
#6
REVIEW
T Qian, M Zhao, X Xu
WHAT IS KNOWN AND OBJECTIVE: Therapeutic effects of anti-VEGF agents, corticosteroids and laser therapy have been previously examined for treating macular oedema secondary to branch and central retinal vein occlusion (BRVO and CRVO). However, anti-VEGF efficacy has not been previously compared to corticosteroid or laser therapy efficacy. We performed a meta-analysis to compare these treatments. METHODS: Pertinent publications were identified through comprehensive literature searches...
June 22, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28632411/the-effect-of-dexamethasone-intravitreal-implant-on-retinal-nerve-fiber-layer-in-patients-diagnosed-with-branch-retinal-vein-occlusion
#7
Orhan Ayar, Atilla Alpay, Yaran Koban, Mehmet Orcun Akdemir, Serpil Yazgan, Sılay Canturk Ugurbas, Suat Hayri Ugurbas
PURPOSE: To evaluate the effect of a single dose of intravitreal dexamethasone (DEX) implant on retinal nerve fiber layer (RNFL) thickness in patients with branch retinal vein occlusion (BRVO) in a 6-month period. MATERIALS AND METHODS: This retrospective observational study included the patients with BRVO who received intravitreal DEX implant and whose assessment included the baseline RNFL thickness measurements. The data of 26 eyes of 24 patients were retrospectively analyzed...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28614133/time-course-of-changes-in-metamorphopsia-following-intravitreal-ranibizumab-injection-for-branch-retinal-vein-occlusion
#8
Yoshimi Sugiura, Fumiki Okamoto, Shohei Morikawa, Yoshifumi Okamoto, Takahiro Hiraoka, Tetsuro Oshika
PURPOSE: To evaluate the effects of intravitreal ranibizumab injection (IVR) on metamorphopsia in patients with branch retinal vein occlusion (BRVO) and to assess the relationship between retinal microstructure and metamorphopsia. METHODS: Subjects were 39 eyes of 39 patients with branch retinal vein occlusion. The severity of metamorphopsia was quantified using the M-CHARTS before and 1, 2, 3, 4, 5, and 6 months after treatment. Based on optical coherence tomography (OCT) images, we assessed central retinal thickness (CRT) and status of the external limiting membrane (ELM) and ellipsoid zone (EZ)...
June 13, 2017: Retina
https://www.readbyqxmd.com/read/28613352/comparison-of-ranibizumab-and-bevacizumab-for-macular-edema-secondary-to-retinal-vein-occlusions-in-routine-clinical-practice
#9
Mehnaz Khan, Karen M Wai, Fabiana Q Silva, Sunil Srivastava, Justis P Ehlers, Aleksandra Rachitskaya, Amy Babiuch, Ryan Deasy, Peter K Kaiser, Andrew P Schachat, Alex Yuan, Rishi P Singh
BACKGROUND AND OBJECTIVE: To determine outcomes of intravitreal ranibizumab (IVR) (Lucentis; Genentech, South San Francisco, CA) versus bevacizumab (IVB) (Avastin; Genentech, South San Francisco, CA) for treatment of macular edema (ME) secondary to retinal vein occlusion (RVO) in routine clinical practice. PATIENTS AND METHODS: A retrospective study identified treatment-naïve patients with ME secondary to RVO where treatment with either IVB or IVR was initiated...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28610573/correlation-between-short-and-long-term-effects-of-intravitreal-ranibizumab-therapy-on-macular-edema-after-branch-retinal-vein-occlusion-a-prospective-observational-study
#10
Yoshiro Minami, Taiji Nagaoka, Akihiro Ishibazawa, Akitoshi Yoshida
BACKGROUND: The correlation between the short- and long-term effects of intravitreal ranibizumab (IVR) on macular edema after branch retinal vein occlusion (BRVO) remains unclear. We assessed the correlation between the short- and long-term effects of IVR on macular edema after BRVO. METHODS: Twenty-one eyes with macular edema after BRVO were enrolled in this prospective observational study. We measured the foveal thickness (FT) and the best-corrected visual acuity (BCVA) before, 1 day after, and 1 month after IVR (0...
June 13, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28601911/repeatability-of-ganglion-cell-inner-plexiform-layer-thickness-measurements-using-spectral-domain-oct-in-branch-retinal-vein-occlusion
#11
Yeon Hee Lee, Min-Su Kim, Seung Il Ahn, Hye Jin Park, Kyung Sup Shin, Jung-Yeul Kim
PURPOSE: To analyze the repeatability of thickness measurements of the central macula, ganglion cell-inner plexiform layer (GC-IPL), and retinal nerve fiber layer (RNFL) using spectral-domain optical coherence tomography (SD-OCT) before and after treatment of macular edema in branch retinal vein occlusion (BRVO). METHODS: We analyzed patients with BRVO who visited our retinal clinic. The repeatability of the thickness measurements were compared using the intraclass correlation coefficient (ICC) and coefficient of variation (COV) of affected versus normal fellow eyes...
June 11, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28592811/evaluating-the-impact-of-vitreomacular-adhesion-on-anti-vegf-therapy-for-retinal-vein-occlusion-using-machine-learning
#12
Sebastian M Waldstein, Alessio Montuoro, Dominika Podkowinski, Ana-Maria Philip, Bianca S Gerendas, Hrvoje Bogunovic, Ursula Schmidt-Erfurth
Vitreomacular adhesion (VMA) represents a prognostic biomarker in the management of exudative macular disease using anti-vascular endothelial growth factor (VEGF) agents. However, manual evaluation of VMA in 3D optical coherence tomography (OCT) is laborious and data on its impact on therapy of retinal vein occlusion (RVO) are limited. The aim of this study was to (1) develop a fully automated segmentation algorithm for the posterior vitreous boundary and (2) to study the effect of VMA on anti-VEGF therapy for RVO...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28559839/branch-retinal-vein-occlusion-macular-ischemia-and-intravitreal-anti-vegf-therapy
#13
Thomas Bertelmann, Hans Ulrich Frank, Hendrik Ansgar Fuchs, Nicolas Feltgen
PURPOSE: To report a case with ischemic macular edema (ME) due to an acute branch retinal vein occlusion (BRVO) which was treated with repeated intravitreal anti-VEGF injections. METHODS: Retrospective case presentation. RESULTS: A 66-year-old female patient was treated with repeated intravitreal anti-VEGF injections due to ischemic ME following an acute BRVO. Over a period of 2.5 years best corrected visual acuity increased from 0.06 to 0...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28551163/therapies-for-macular-edema-associated-with-branch-retinal-vein-occlusion-a-report-by-the-american-academy-of-ophthalmology
#14
Justis P Ehlers, Stephen J Kim, Steven Yeh, Jennifer E Thorne, Prithvi Mruthyunjaya, Scott D Schoenberger, Sophie J Bakri
PURPOSE: To evaluate the available evidence on the ocular safety and efficacy of current therapeutic alternatives for the management of macular edema (ME) secondary to branch retinal vein occlusion (BRVO). METHODS: Literature searches were last conducted on January 31, 2017, in PubMed with no date restrictions and limited to articles published in English, and in the Cochrane Database without language limitations. The searches yielded 321 citations, of which 109 were reviewed in full text and 27 were deemed appropriate for inclusion in this assessment...
May 24, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28536764/optical-coherence-tomography-angiography-wide-field-montage-in-branch-retinal-vein-occlusion-before-and-after-anti-vascular-endothelial-derived-growth-factor-injection
#15
Chung Yee Chung, Kenneth Kai Wang Li
The wide-field montage technique of optical coherence tomography angiography provides good delineation of the improvement in microvascular disturbance associated with branch retinal vein occlusion after treatment with anti-vascular endothelial-derived growth factor injection. It may be further evaluated for the assessment of treatment progress in patients with retinal vein occlusion.
May 24, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28525562/retinal-vein-occlusion-as-the-surrogate-marker-for-premature-brain-aging-in-young-patients
#16
Kwan Hyuk Cho, Chi Kyung Kim, Kyungmi Oh, Seung-Won Oh, Kyu Hyung Park, Sang Jun Park
Purpose: We investigated cerebral small vessel disease (SVD) in patients with incidental retinal vein occlusion (RVO). Methods: This retrospective, case-control, observational trial included 125 patients with RVO who underwent brain magnetic resonance imaging (MRI) and 1105 age-matched controls who underwent comprehensive medical interviews and MRI. Underlying cardiovascular diseases and MRI findings were investigated in the patients with RVO according to age (<60 or ≥60 years) and RVO occlusion level (central or branch)...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28525557/retinal-vascular-branching-in-healthy-and-diabetic-subjects
#17
Ting Luo, Thomas J Gast, Tyler J Vermeer, Stephen A Burns
Purpose: To measure the effect of nonproliferative diabetic retinopathy (NPDR) on retinal branching. To compare vascular branching in healthy and diabetic subjects with established biophysical models. Methods: Vascular bifurcations in arteries and veins were imaged in 17 NPDR and 26 healthy subjects with the Indiana adaptive optics scanning laser ophthalmoscope (AOSLO). Vessel measurements were grouped according to parent vessel diameters into large (≤50 ∼ <100 μm) and small (≤20 ∼ <50 μm) sizes...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28513496/intra-arterial-chemotherapy-for-retinoblastoma-two-year-results-from-tertiary-eye-care-center-in-india
#18
Pukhraj Rishi, Tarun Sharma, Minal Sharma, Aditya Maitray, Abhinav Dhami, Vishvesh Aggarwal, Saravanan Munusamy, R Ravikumar, Satheesh Ramamurthy
AIM: The aim of this study is to describe treatment outcomes and complications of selective intra-arterial chemotherapy (IAC) for intraocular retinoblastoma (RB). MATERIALS AND METHODS: A retrospective, interventional series of 10 eyes with RB which underwent IAC using melphalan (5 mg/7.5 mg) and topotecan (1 mg), or melphalan (5 mg/7.5 mg) alone. Treatment outcomes were evaluated in terms of tumor control, vitreous seeds (VS) and subretinal seeds (SRS) control, and globe salvage rates...
April 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28507362/visual-outcome-of-retinal-vein-occlusion-in-patients-residing-at-high-altitude
#19
Ahsan Mukhtar, Muhammad Saim Khan, Asad Habib, Mazhar Ishaq, Omer Farooq
OBJECTIVE: To study visual outcome in patients of high altitude retinopathy presenting with retinal venous occlusion. METHODS: The randomised clinical trial study was conducted at the Armed Forces Institute of Ophthalmology, Rawalpindi, Pakistan, from January 2013 to December 2015, and comprised eyes of lowlanders. Patients staying at high altitude (>8,000 feet above sea level) as part of their service duty and presented with retinal venous occlusive disease were included...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28503435/evaluation-of-hyperreflective-foci-as-a-prognostic-factor-of-visual-outcome-in-retinal-vein-occlusion
#20
Bin Mo, Hai-Ying Zhou, Xuan Jiao, Feng Zhang
AIM: To evaluate the potential role of hyperreflective foci (HF) as a prognostic indicator of visual outcome in patients with macular edema (ME) due to retinal vein occlusion (RVO). METHODS: We retrospectively reviewed 50 eyes of 50 patients with ME due to ischemic central retinal vein occlusion (CRVO), non-ischemic CRVO and branch retinal vein occlusion (BRVO) who were treated with anti-vascular endothelial growth factor (anti-VEGF) at Beijing Tongren Eye Center from January 2013 to July 2016...
2017: International Journal of Ophthalmology
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