scholarly journals Radial Peripapillary Capillary Network Visualized Using Wide-Field Montage Optical Coherence Tomography Angiography

2016 ◽  
Vol 57 (9) ◽  
pp. OCT504 ◽  
Author(s):  
Tomoko Mase ◽  
Akihiro Ishibazawa ◽  
Taiji Nagaoka ◽  
Harumasa Yokota ◽  
Akitoshi Yoshida
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Capillary Network ◽  
Wide Field ◽  
Optical Coherence ◽  
Radial Peripapillary Capillary

Use of ultra-wide field retinal imaging and optical coherence tomography angiography in the diagnosis of incomplete Susac syndrome

2020 ◽  
pp. 112067212096548
Author(s):  
Carmen Alba-Linero ◽  
John Paul Liscombe-Sepúlveda ◽  
Victor Llorenç ◽  
Joan GiraltJosa ◽  
Alfredo Adán
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Capillary Density ◽  
Acute Attack ◽  
Clinical Findings ◽  
Drop Out ◽  
Wide Field ◽  
Optical Coherence ◽  
Cotton Wool Spots ◽  
En Face Oct

Purpose: To describe clinical findings through ultra-wide field (UWF) images and optical coherence tomography angiography (OCT-A), in Susac’s syndrome (SS). Methods: SS patients were retrospectively analyzed in a single center. Clinical features, ultra-wide-field retinographies (UWF-PR), UWF fluorescein angiographies (UWF-FA), and optical coherence tomography angiography & en face (OCT-A/EF) were reviewed. Results: Twelve eyes from six patients with a mean follow-up of 35.66 months ± SD 36.88 were included. UWF-PR showed areas of retinal whitening and cotton-wool spots in all the eyes after acute attack. Segmentary mid peripheral arteriolitis could be observed in five eyes by UWF-FA in acute and convalescent stages. OCT-A revealed capillary density changes in all of the affected eyes. During the acute phase there was a well-preserved superficial capillary network, while deep retinal plexus showed a lower density in the affected areas. OCT-A/EF revealed deep retinal plexus drop-out and surrounding edematous retina in acute attacks, becoming atrophic over time. Conversely, superficial plexus was much less affected. Perifoveal reperfusion was seen in seven eyes after the acute attack. Conclusions: UWF-PR/FA and OCT-A/EF might be helpful to stablish an early diagnosis and to monitor SS progression.

Optical coherence tomography angiography in myopic peripapillary intrachoroidal cavitation complicated by choroidal neovascularization

2020 ◽  
pp. 112067212094401
Author(s):  
Chiara Comune ◽  
Daniela Montorio ◽  
Gilda Cennamo
Keyword(s):  
Optical Coherence Tomography ◽  
Choroidal Neovascularization ◽  
Optical Coherence Tomography Angiography ◽  
Vascular Density ◽  
Optical Coherence ◽  
Pathological Myopia ◽  
Group 2 ◽  
The University ◽  
Radial Peripapillary Capillary ◽  
Intrachoroidal Cavitation

Purpose: To detect the vessel density (VD) of the radial peripapillary capillary (RPC) in eyes affected by pathological myopia with or without a peripapillary intrachoroidal cavitation (PICC) and in eyes with PICC complicated by choroidal neovascularization (CNV), using optical coherence tomography angiography (OCTA). Methods: We prospectively enrolled highly myopic patients from January 2016 to December 2019 at the Eye Clinic of the University of Naples “Federico II.” We divided included patients into three groups: group 1 including patients with PICC complicated by CNV; group 2 including patients with PICC without complications; group 3 including patients with high myopia without PICC and CNV. One-way analysis of variance (ANOVA) followed by Bonferroni post hoc analysis was used to evaluate differences in VD of radial peripapillary capillary (RPC) in papillary whole, peripapillary regions and its sectors among the three groups. Results: We enrolled 12 highly myopic eyes with PICC complicated by CNV, 21 highly myopic eyes with PICC without CNV and 23 highly myopic eyes without PICC. The myopic eyes with PICC revealed a statistically significant reduction in VD of the RPC comparing to the other groups ( p < 0.001), especially in eyes affected by myopic PICC complicated by CNV ( p < 0.001). These results were similar analyzing the VD in different sectors of the peripapillary region among the three groups ( p < 0.001). Conclusion: OCTA detects the changes in peripapillary vascular density of highly myopic eyes. We demonstrated that the RPC vasculature is significantly influenced by the presence of PICC, especially in myopic eyes developing a CNV.

scholarly journals Role of Optical Coherence Tomography Angiography to differentiate Intraretinal microvascular abnormalities and retinal neovascularization in Diabetic Retinopathy

2021 ◽  
Vol 38 (1) ◽  
Author(s):  
Abdul Sami Memon ◽  
Nasir Ahmed Memon ◽  
Pir Salim Mahar
Keyword(s):  
Optical Coherence Tomography ◽  
Diabetic Retinopathy ◽  
Clinical Diagnosis ◽  
Proliferative Diabetic Retinopathy ◽  
Optical Coherence Tomography Angiography ◽  
Retinal Neovascularization ◽  
Wide Field ◽  
Optical Coherence ◽  
Fundus Fluorescein Angiography

Objective: To assess proliferative diabetic retinopathy (PDR) and to describe the difference in angiographic representation of new vessels (NVs) and Intra retinal microvascular abnormalities (IRMA) on optical coherence tomography angiography (OCTA). Methods: A cross-sectional observational study was performed at ISRA Postgraduate Institute of Ophthalmology, Karachi, from March 2018 to September 2018. Forty-two eyes of 21 patients with history of diabetes mellitus (DM) were examined. Twenty-eight eyes with a clinical diagnosis of severe non proliferative diabetic retinopathy (NPDR) or proliferative diabetic retinopathy (PDR) according to early treatment diabetic retinopathy study (ETDRS) were included and evaluated using Swept source optical coherence tomography angiography (SS-OCTA). Then face wide field SS-OCTA images and co registered structural optical coherence tomography (OCT) with flow overlay were used to distinguish the features of IRMA and retinal NVs. Results: Forty-two eyes (21 patients) were examined clinically. Fourteen eyes had moderate NPDR, 15 had severe NPDR and 13 eyes had changes consistent with PDR. After clinical diagnosis, we included 28 eyes in our study based on inclusion criteria. These 28 eyes went through SS-OCTA evaluation and we observed 15 cases with PDR and 13 with severe NPDR changes. The OCTA and clinical diagnosis were similar except in 2 eyes, which is critical but not statically significant showing the importance of this noninvasive technology. Conclusions: Widefield OCTA can work as an alternative to fundus fluorescein angiography (FFA) in the diagnosis of diabetic retinopathy (DR). As it is a non-invasive and depth encoded technique so can be used frequently to monitor the retinal changes and their progression. doi: https://doi.org/10.12669/pjms.38.1.3891 How to cite this:Memon AS, Memon NA, Mahar PS. Role of Optical Coherence Tomography Angiography to differentiate Intraretinal microvascular abnormalities and retinal neovascularization in Diabetic Retinopathy. Pak J Med Sci. 2022;38(1):---------.  doi: https://doi.org/10.12669/pjms.38.1.3891 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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