scholarly journals Retinal and Choroidal Vascular Changes in Eyes with Pseudoexfoliation Syndrome: a Comparative Study Using Optical Coherence Tomography Angiography

2019 ◽  
Author(s):  
Esat Çınar ◽  
Berna Yüce ◽  
Fatih Aslan
Keyword(s):  
Optical Coherence Tomography ◽  
Comparative Study ◽  
Optical Coherence Tomography Angiography ◽  
Pseudoexfoliation Syndrome ◽  
Optical Coherence ◽  
Vascular Changes

Evaluation of macular vascular changes in Behçet's Disease using optical coherence tomography angiography

2020 ◽  
Vol 7 (2) ◽  
pp. 29
Author(s):  
MennatallahG. A. Saleh ◽  
MohamedTarek Abdelmoneim ◽  
Abdelsalam Abdalla ◽  
Mohamed Sharaf ◽  
MohamedG. A. Saleh
Keyword(s):  
Optical Coherence Tomography ◽  
Behçet’S Disease ◽  
Behcet’S Disease ◽  
Optical Coherence Tomography Angiography ◽  
Behçet's Disease ◽  
Optical Coherence ◽  
Vascular Changes ◽  
Behcet's Disease

scholarly journals Early Retinal Flow Changes after Vitreoretinal Surgery in Idiopathic Epiretinal Membrane Using Swept Source Optical Coherence Tomography Angiography

2019 ◽  
Vol 8 (12) ◽  
pp. 2067 ◽  
Author(s):  
Rodolfo Mastropasqua ◽  
Rossella D’Aloisio ◽  
Pasquale Viggiano ◽  
Enrico Borrelli ◽  
Carla Iafigliola ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Epiretinal Membrane ◽  
Optical Coherence Tomography Angiography ◽  
Optical Coherence ◽  
Vascular Changes ◽  
Ilm Peeling ◽  
Swept Source ◽  
Idiopathic Epiretinal Membrane ◽  
Capillary Plexus ◽  
Superficial Capillary Plexus

(1) Background: The aim of this observational cross-sectional work was to investigate early retinal vascular changes in patients undergoing idiopathic epiretinal membrane (iERM) surgery using swept source optical coherence tomography angiography (SS-OCTA); (2) Methods: 24 eyes of 24 patients who underwent vitrectomy with internal limiting membrane (ILM) peeling were evaluated pre- and postoperatively using SS-OCTA system (PLEX Elite 9000, Carl Zeiss Meditec Inc., Dublin, CA, USA). For each eye, five 6x6-mm OCTA volume scans were acquired by two observers independently. The en face images of superficial capillary plexus (SCP) were then exported to imageJ and a semi-automated algorithm was used for subsequent quantitative analysis. Perfusion density (PD), vessel length density (VLD), vessel diameter index (VDI) and vessel tortuosity (VT) of SCP were evaluated in both the parafoveal (2.5 mm diameter) and perifoveal areas (5.5 mm diameter); (3) Results: At OCTA analysis statistically significant differences were found between controls and diseased eyes for all parameters in parafoveal and perifoveal regions (p < 0.001; p < 0.05) except for perifoveal VLD. During 6-month follow up, both anatomical/perfusion and functional parameters showed a statistically significant improvement if compared to preoperative values. In detail, at one-month post vitrectomy, VLD and VT significantly changed in parafoveal region (p = 0.043; p = 0.045), while PD and VDI showed a trend of increase in both parafoveal and perifoveal region. At 6 months after surgery, PD, VLD and VT of parafoveal region significantly improved (p = 0.021, p = 0.018, p = 0.047 respectively). (4) Conclusions: SS-OCTA provides a quantitative and qualitative analysis of the superficial capillary plexus allowing for early vascular changes assessment after vitrectomy with iERM and ILM peeling.

scholarly journals Choroidal Vascular Changes in Acute Idiopathic Maculopathy as Demonstrated by Multimodal Imaging including Optical Coherence Tomography Angiography

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Tahsin Khundkar ◽  
Syed R. Hasan ◽  
Mark P. Breazzano ◽  
Constance Mei ◽  
Brandon B. Johnson
Keyword(s):  
Optical Coherence Tomography ◽  
Multimodal Imaging ◽  
Optical Coherence Tomography Angiography ◽  
Pigment Epithelium ◽  
Retinal Pigment ◽  
Optical Coherence ◽  
Vascular Changes ◽  
Paracentral Scotoma ◽  
The Right ◽  
Choroidal Perfusion

Purpose. To present a case of acute idiopathic maculopathy (AIM) and illustrate primary choroidal perfusion defect using multimodal imaging. Case Description. We report a case of a 24-year-old man with a paracentral scotoma of the right eye and recent flu-like illness. The patient was found to have a unilateral ovoid-shaped, placoid lesion just inferior to the fovea. Multimodal imaging confirmed findings most consistent with a diagnosis of acute idiopathic maculopathy (AIM). Serologic studies confirmed a strongly positive immunoglobulin G (IgG) titer for coxsackievirus A. Spectral-domain optical coherence tomography angiography (SD-OCTA) showed bilateral areas of vascular reduction at the level of the choriocapillaris and choroid, sparing the retinal circulation. Conclusions and Importance. The changes in outer retina and retinal pigment epithelium, classically described in AIM, are likely secondary to choroidal hypoperfusion.

Retinal Vascular Changes on Optical Coherence Tomography Angiography and Ultra-widefield Fluorescein Angiography in Patients With Chronic Leukemia

2019 ◽  
Vol 3 (6) ◽  
pp. 420-427 ◽  
Author(s):  
T. Y. Alvin Liu ◽  
B. Douglas Smith ◽  
Karen Mackey ◽  
Marguerite O. Linz ◽  
Adrienne W. Scott
Keyword(s):  
Optical Coherence Tomography ◽  
Fluorescein Angiography ◽  
Multimodal Imaging ◽  
Optical Coherence Tomography Angiography ◽  
Optical Coherence ◽  
Vascular Changes ◽  
Chronic Leukemia ◽  
Vascular Flow ◽  
Flow Loss ◽  
Sd Oct

Purpose: This article describes pathological retinal vascular changes on multimodal imaging in patients with chronic leukemia. Methods: A prospective, observational study was conducted. Patients with chronic leukemia and concurrent leukocytosis were recruited from a tertiary-referral, academic medical center. Eligible patients received complete ophthalmic examinations and multimodal retinal imaging: spectral-domain optical coherence tomography (SD-OCT), optical coherence tomography angiography (OCTA), and ultra-widefield fluorescein angiography (UWF FA). Results: Six patients (11 eyes) were consecutively enrolled. At presentation, mean age was 56.9 years, median visual acuity was Snellen 20/20, and median leukocyte count was 114.5 K/mm3 (upper limit of normal: 11.00). Three of 11 eyes had SD-OCT abnormalities, including focal retinal thinning and hyperreflective material at the level of the retinal pigment epithelium. Five of 11 eyes showed OCTA abnormalities, including focal vascular flow loss and a diffuse decrease in vascular density. Four of 11 eyes had peripheral retinal abnormalities on UWF FA, including microaneurysms and nonperfusion. Five of 11 eyes showed pathological vascular changes on retinal imaging, and of these 5 eyes, 3 had unremarkable retinal examinations. Conclusions: Retinal vascular pathologies are frequently seen in patients with chronic leukemia and concurrent leukocytosis, though these patients are rarely symptomatic. Multimodal imaging allows for more sensitive detection of these pathologies compared with clinical examination alone. On OCTA, pathological vascular flow loss is more evident in the superficial capillary plexus. There may be a correlation between pathologies seen in the central and peripheral retina, but this observation will need to be confirmed by a future study with a larger cohort.

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