keyword
MENU ▼
Read by QxMD icon Read
search

choriocapillaris

keyword
https://www.readbyqxmd.com/read/28820167/swept-source-optical-coherence-tomography-angiography-of-choroid-in-choroidal-hemangioma-before-and-after-laser-photocoagulation
#1
Rohan Chawla, Koushik Tripathy, Anu Sharma, Rajpal Vohra
Swept source optical coherence tomography-angiography (OCT-angiography) gives us a unique opportunity to study the vasculature of choroidal lesions in vivo. We describe the OCT angiographic characteristics of circumscribed choroidal hemangioma before and after laser photocoagulation. Medium-sized choroidal vessels/vessels on the tumor surface become predominantly visible after laser photocoagulation due to laser-induced damage to the overlying choriocapillaris. OCT-angiography adds a new dimension to in vivo analysis of vascular changes in choroid due to choroidal tumors and their response to therapy...
August 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28817420/optical-coherence-tomography-angiography-for-the-detection-of-secondary-choroidal-neovascularization-in-vitelliform-macular-dystrophy
#2
Martin Stattin, Daniel Ahmed, Carl Glittenberg, Ilse Krebs, Siamak Ansari-Shahrezaei
PURPOSE: Optical coherence tomography angiography (OCTA) is used to assess vascular abnormality in advanced stage vitelliform macular dystrophy (VMD2). METHODS: Multimodal imaging including spectral domain (SD) OCT, autofluorescence (AF), fluorescein (FA) and indocyanine green angiography (ICGA) as well as optical coherence tomography angiography were performed. PATIENTS: Two eyes in one young patient with diagnosed vitelliform macular dystrophy were investigated for progressive visual dysfunction...
August 16, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28810037/quantitative-features-of-the-choriocapillaris-in-healthy-individuals-using-swept-source-optical-coherence-tomography-angiography
#3
Mayss Al-Sheikh, Khalil Ghasemi Falavarjani, Maximilian Pfau, Akihito Uji, Phillip P Le, SriniVas R Sadda
BACKGROUND AND OBJECTIVE: To quantify vessel density (VD) and grey value (GV) as a measure of flow in the choriocapillaris (CC) in healthy subjects with optical coherence tomography angiography (OCTA). PATIENTS AND METHODS: In this prospective, noncomparative case series, 3 mm × 3 mm OCTA images of 36 eyes of 22 healthy individuals were obtained using a swept-source instrument. VD and GV levels were calculated on CC en face slabs in the central 1-mm (subfoveal field) and surrounding 2...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28810036/evaluation-of-macular-perfusion-in-healthy-smokers-by-using-optical-coherence-tomography-angiography
#4
Ziya Ayhan, Mahmut Kaya, Taylan Ozturk, Omer Karti, F Hakan Oner
BACKGROUND AND OBJECTIVE: To investigate the macular perfusion changes in healthy smokers by using optical coherence tomography angiography (OCTA). PATIENTS AND METHODS: OCTA measurements were taken for the right eyes of 40 smokers (Group 1) and age- and sex-matched control cases (Group 2). Group 1 underwent OCTA scanning with the XR Avanti AngioVue OCTA (Optovue, Fremont, CA) at baseline and at 5 minutes, 30 minutes, and 60 minutes after one standard cigarette smoking...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28796562/loss-of-endothelial-planar-cell-polarity-and-cellular-clearance-mechanisms-in-age-related-macular-degeneration
#5
Maria Mercedes Campos, Mones S Abu-Asab
Apoptosis, autophagosomes, and lysosomes are lacking in the retinal pigment epithelium (RPE) of age-related macular degeneration (AMD) eyes. Necrosis, not apoptosis, appeared to be the prominent type of cell death in RPE, which led to the accumulation of cell debris within and on both sides of Bruch's membrane. The endothelium of the choriocapillaris had an altered planar cell polarity which encompassed the disappearance of fenestrations, the thickening of cytoplasm, and anterior nuclear dislocation. There were no significant differences in RPE and choroidal aberrations between macular and temporal regions...
August 10, 2017: Ultrastructural Pathology
https://www.readbyqxmd.com/read/28795246/bilateral-multiple-evanescent-white-dot-syndrome
#6
Chiara Veronese, Chiara Maiolo, Mariachiara Morara, Grayson W Armstrong, Antonio P Ciardella
PURPOSE: To present a single case of bilateral multiple evanescent white dot syndrome (MEWDS). METHODS: A single case with three months of follow-up using imaging studies including fundus color photography (FP), fluorescein angiography (FA), indocyanine green angiography (ICGA), fundus autofluorescence (FAF), spectral-domain optical coherence tomography (SD-OCT), en face SD-OCT and optical coherence tomography angiography (OCTA) is presented. RESULTS: The patient presented with bilateral MEWDS, ultimately with complete resolution of symptoms...
August 9, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28767554/comparison-of-optical-coherence-tomography-angiographic-changes-after-anti-vascular-endothelial-growth-factor-therapy-alone-or-in-combination-with-photodynamic-therapy-in-polypoidal-choroidal-vasculopathy
#7
Kelvin Yi Chong Teo, Yasuo Yanagi, Shu Yen Lee, Ian Yew San Yeo, Gavin Siew Wei Tan, Ranjana Mathur, Choi Mun Chan, Tien Yin Wong, Chui Ming Gemmy Cheung
PURPOSE: To compare changes in optical coherence tomography angiography in eyes with polypoidal choroidal vasculopathy after treatment with anti-vascular endothelial growth factor monotherapy or combined with photodynamic therapy. METHODS: This is a longitudinal case-controlled study. The authors performed optical coherence tomography angiography at baseline and Month 3 in patients with treatment-naive polypoidal choroidal vasculopathy undergoing monotherapy (n = 10) or combination therapy (n = 13)...
August 1, 2017: Retina
https://www.readbyqxmd.com/read/28765145/optical-coherence-tomography-angiography-characterisation-of-best-disease-and-associated-choroidal-neovascularisation
#8
Abhilash Guduru, Arushi Gupta, Mudit Tyagi, Subhadra Jalali, Jay Chhablani
AIMS: To characterise the vasculature of the retina in patients with Best vitelliform dystrophy, including those with choroidal neovascularisation (CNV), using optical coherence tomography angiography (OCTA) and correlate with fluorescein angiography (FA). METHODS: This prospective observational study included 19 eyes of 10 patients with Best disease. Using OCTA, all layers of retina were qualitatively characterised for each eye. Patients with CNV also underwent FA, and areas of CNV were measured by OCTA and FA and correlated...
August 1, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28763560/choroidal-vasculature-in-bietti-crystalline-dystrophy-with-cyp4v2-mutations-and-in-retinitis-pigmentosa-with-eys-mutations
#9
Takako Hirashima, Manabu Miyata, Kenji Ishihara, Tomoko Hasegawa, Masako Sugahara, Ken Ogino, Munemitsu Yoshikawa, Masayuki Hata, Yoshimasa Kuroda, Yuki Muraoka, Sotaro Ooto, Nagahisa Yoshimura
Purpose: We compare the choroidal vascular area between Bietti crystalline dystrophy (BCD) patients with CYP4V2 mutations, retinitis pigmentosa (RP) patients with EYS mutations, and normal controls, and investigate the correlation between choroidal vascular area and associated parameters. Methods: This prospective case-series study included consecutive nine eyes of nine BCD patients with CYP4V2 mutations (BCD group), 16 eyes of 16 RP patients with EYS mutations (EYS-RP group), and 16 eyes of 16 normal volunteers matched for age and axial length (control group)...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28715591/choriocapillaris-flow-in-myopia
#10
Richard F Spaide
No abstract text is available yet for this article.
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28708222/multimodal-imaging-in-a-patient-with-traumatic-choroidal-ruptures
#11
Luisa Pierro, Chiara Giuffrè, Alessandro Rabiolo, Marco Gagliardi, Alessandro Arrigo, Francesco Bandello
PURPOSE: To describe the case and the follow-up of a traumatic choroidal rupture characterized by means of multimodal imaging including color fundus photographs, infrared reflectance, blue autofluorescence, swept-source optical coherence tomography, fluorescein angiography (FA), indocyanine green angiography (ICGA), and optical coherence tomography angiography (OCT-A). METHODS: Case report. RESULTS: A 17-year-old boy was referred to our clinic complaining of reduction in visual acuity in the right eye (RE) after a blunt ocular trauma during a soccer match...
July 5, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28701715/clinical-relevance-of-reduced-decorrelation-signals-in-the-diabetic-inner-choroid-on-optical-coherence-tomography-angiography
#12
Yoko Dodo, Kiyoshi Suzuma, Kenji Ishihara, Shin Yoshitake, Masahiro Fujimoto, Tatsuya Yoshitake, Yuko Miwa, Tomoaki Murakami
Diabetes induces lesions of the retinal and choroidal capillaries, which promote the pathogenesis of diabetic retinopathy (DR). The decorrelation signals in optical coherence tomography angiography (OCTA) represent the blood flow and vascular structure, and three-dimensional OCTA images enable individual capillary layers to be evaluated separately. The current study documented that en-face OCTA images revealed spots of flow void in the choriocapillaris layer in eyes with DR. Quantitative investigation demonstrated that non-flow areas within the central subfield (CSF) increased in eyes with more severe DR grades...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28700136/an-automated-framework-to-quantify-areas-of-regional-ischemia-in-retinal-vascular-diseases-with-oct-angiography
#13
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/28663867/adaptive-optics-optical-coherence-tomography-angiography-for-morphometric-analysis-of-choriocapillaris-invited
#14
Kazuhiro Kurokawa, Zhuolin Liu, Donald T Miller
Histological studies have shown that morphometric changes at the microscopic level of choriocapillaris (CC) occur with aging and disease onset, and therefore may be sensitive biomarkers of outer retinal health. However, visualizing CC at this level in the living human eye is challenging because its microvascular is tightly interconnected and weakly reflecting. In this study, we address these challenges by developing and validating a method based on adaptive optics optical coherence tomography with angiography (AO-OCTA) that provides the necessary 3D resolution and image contrast to visualize and quantify these microscopic details...
March 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28663848/reflectance-based-projection-resolved-optical-coherence-tomography-angiography-invited
#15
Jie Wang, Miao Zhang, Thomas S Hwang, Steven T Bailey, David Huang, David J Wilson, Yali Jia
Optical coherence tomography angiography (OCTA) is limited by projection artifacts from the superficial blood vessels onto deeper layers. We have recently described projection-resolved (PR) OCTA that solves the ambiguity between in situ flow and flow projection along each axial scan and suppresses the artifact on both en face and cross-sectional angiograms. While this method significantly improved the depth resolution of OCTA, the vascular integrity of the deeper layers was not fully preserved. In this study, we propose a novel reflectance-based projection-resolved (rbPR) OCTA algorithm which uses OCT reflectance to enhance the flow signal and suppress the projection artifacts in 3-dimensional OCTA...
March 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28647462/optical-coherence-tomography-angiography-of-macular-features-after-proton-beam-radiotherapy-for-small-choroidal-melanoma
#16
Alexandre Sellam, Florence Coscas, Livia Lumbroso-Le Rouic, Rémi Dendale, Marco Lupidi, Gabriel Coscas, Laurence Desjardins, Nathalie Cassoux
PURPOSE: To describe the macular features of patients treated with proton beam therapy for choroidal melanoma (CM), using the optical coherence tomography-angiography (OCTA). DESIGN: Retrospective case-control study. METHODS: This study included patients treated with proton beam radiotherapy (PBR) for a small CM. Only patients that had received 100% of the dose 60 GyEBR to the macular area were included in the analysis. All the patients have undergone a full ophthalmological examination including: visual acuity, OCT B-scan and OCTA...
June 21, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28629927/quick-freeze-deep-etch-electron-microscopy-visualization-of-the-mouse-posterior-pole
#17
Ebraheim N Ismail, Jeffrey W Ruberti, Goldis Malek
The mouse is one of the most commonly used mammalian systems to study human diseases. In particular it has been an invaluable tool to model a multitude of ocular pathologies affecting the posterior pole. The aim of this study was to create a comprehensive map of the ultrastructure of the mouse posterior pole using the quick-freeze/deep-etch method (QFDE). QFDE can produce detailed three-dimensional images of tissue structure and macromolecular moieties, without many of the artifacts introduced by structure-altering post-processing methods necessary to perform conventional transmission electron microscopy (cTEM)...
September 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28614137/swept-source-optical-coherence-tomography-angiography-in-rickettsial-retinitis
#18
Rim Kahloun, Bechir Jelliti, Imen Ksiaa, Hager Ben Amor, Sonia Zaouali, Marco Lupidi, Salim Ben Yahia, Moncef Khairallah
PURPOSE: To report optical coherence tomography angiography findings in a patient with rickettsial retinitis. METHODS: A 29-year-old man complaining of acute blurring vision in the right eye associated with Rickettsia conorii infection underwent a comprehensive ocular examination, fluorescein angiography, spectral-domain optical coherence tomography, and swept-source optical coherence tomography angiography. RESULTS: Funduscopy showed two large areas of retinitis in the inferior macula along the distribution of the inferotemporal artery with associated retinal hemorrhages, retinal edema, and serous retinal detachment...
June 13, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28613359/octa-imaging-of-choroidal-neovascular-membrane-secondary-to-toxoplasma-retinochoroiditis
#19
Fatih Mehmet Türkcü, Alparslan Şahin, Harun Yüksel, Muhammed Şahin, Ümit Karaalp
Two patients (a 37-year-old man and a 28-year-old woman) who had choroidal neovascular membrane (CNVM) secondary to inactive toxoplasma retinochoroiditis scarring were evaluated. Multimodal imaging including fluorescein angiography, optical coherence tomography (OCT), and OCT angiography (OCTA) was used. CNVM secondary to inactive toxoplasma retinochoroiditis scarring was detected. Representative images of CNVM were demonstrated in the outer retinal layer and choriocapillary layer on OCTA. OCTA, a relatively new technique, is useful in the diagnosis of the CNVMs secondary to retinochoroiditis...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28579550/the-application-of-optical-coherence-tomography-angiography-in-retinal-diseases
#20
Kumar Sambhav, Sandeep Grover, Kakarla V Chalam
Optical coherence tomography angiography (OCTA) is a new, noninvasive imaging technique that generates real-time volumetric data on chorioretinal vasculature and its flow pattern. With the advent of high-speed optical coherence tomography, established enface chorioretinal segmentation, and efficient algorithms, OCTA generates images that resemble an angiogram. The principle of OCTA involves determining the change in backscattering between consecutive B-scans and then attributing the differences to the flow of erythrocytes through retinal blood vessels...
June 1, 2017: Survey of Ophthalmology
keyword
keyword
45568
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"