wide-field and long-ranging-depth optical coherence tomography microangiography of human oral mucosa (Conference Presentation)

2018 ◽  
Author(s):  
Wei Wei ◽  
Woo June Choi ◽  
Shaojie Men ◽  
Shaozhen Song ◽  
Ruikang K. Wang
Keyword(s):  
Optical Coherence Tomography ◽  
Oral Mucosa ◽  
Wide Field ◽  
Optical Coherence

scholarly journals Wide-Field Spectral-Domain Optical Coherence Tomography in Patients and Carriers of X-linked Retinoschisis

Ophthalmology ◽  
2013 ◽  
Vol 120 (1) ◽  
pp. 169-174 ◽  
Author(s):  
Ninel Z. Gregori ◽  
Byron L. Lam ◽  
Giovanni Gregori ◽  
Sudarshan Ranganathan ◽  
Edwin M. Stone ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Spectral Domain ◽  
Wide Field ◽  
Optical Coherence

Topographic Analysis of Short Posterior Ciliary Arteries Using Wide-Field Swept-Source En-Face Optical Coherence Tomography

2021 ◽  
Author(s):  
Raphael Lejoyeux ◽  
Raphael Atia ◽  
Kiran Vupparaboina ◽  
Mohamed Ibrahim ◽  
Jose-Alain Sahel ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Posterior Pole ◽  
Wide Field ◽  
Temporal Part ◽  
Optical Coherence ◽  
Cross Sectional ◽  
Swept Source ◽  
Topographic Analysis ◽  
En Face ◽  
Ciliary Arteries

Abstract Purpose: To study the topographic distribution of the short posterior ciliary arteries (SPCA) entry sites into the choroid in normal eyes using structural en-face swept source optical coherence tomography (SS-OCT). Methods: Retrospective analysis of SS-OCT scans (wide-field structural SS-OCT 12x12mm) of 13 healthy subjects was performed. Cross-sectional swept-source OCT scans derived from a volume scan were represented as en-face image display following the Choroid-Scleral Interface to obtain en-face OCT. SPCAs in their last scleral location before choroidal entrance were identified manually, counted and localized by two masked observers. Correlations between two masked observers were analyzed using inter- and intra- class correlation. Results: Accuracy for the choroidal inner and outer border segmentation was 95-99%. Eighteen eyes from 13 normal subjects were included for SPCA analysis. The mean number of arteries was 13.8±3.5 per eye. Thirty-six percent were in the center of the posterior pole image; however, 21% were in the temporal part of the posterior pole. Median accuracy of the detection is 0.94. The correlation between the two observers was fair (0.54).Conclusion: Our algorithm allows visualization of the SPCA at the posterior pole of the eye using wide-field en-face SS-OCT. It can also help the clinicians to study the SPCAs in numerous ocular diseases, particularly its relationship with focal choroidal diseases.

Wide-field optical coherence tomography deviation map for early glaucoma detection

2021 ◽  
pp. bjophthalmol-2021-319509
Author(s):  
Hyungjun Kim ◽  
Hae Min Park ◽  
Hyo Chan Jeong ◽  
So Yeon Moon ◽  
Hyunsoo Cho ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Characteristic Curve ◽  
Wide Field ◽  
Optical Coherence ◽  
Diagnostic Ability ◽  
Swept Source ◽  
Early Glaucoma ◽  
Field Database ◽  
The Individual ◽  
Healthy Eyes

Background/aimsThis study aimed to establish a wide-field optical coherence tomography (OCT) deviation map obtained from swept-source OCT (SS-OCT) scans. Moreover, it also aimed to compare the diagnostic ability of this wide-field deviation map with that of the peripapillary and macular deviation maps currently being used for the detection of early glaucoma (EG).MethodsFour hundred eyes, including 200 healthy eyes and 200 eyes with EG were enrolled in this retrospective observational study. Patients underwent a comprehensive ocular examination, including wide-field SS-OCT (DRI-OCT Triton; Topcon, Tokyo, Japan). The individual wide-field scan was converted into a uniform template using the fovea and optic disc centres as fixed landmarks. Subsequently, the wide-field deviation map was obtained via the comparison between individual wide-field data and a normative wide-field database that had been created by combining images of healthy eyes into a uniform template in a previous study. The ability of the new wide-field deviation map to distinguish between EG and healthy eyes was assessed by comparing it with conventional deviation maps based on the area under the receiver operating characteristic curve (AUC).ResultsThe wide-field deviation map obtained using the normative wide-field database showed the highest diagnostic ability for the diagnosis of EG (AUC=0.980 and 961 for colour-coded pixels presenting <5% and <1%, respectively) among various deviation maps. Its AUC was significantly superior to that of most conventional deviation maps (p<0.05). The wide-field deviation map demonstrated early structural glaucomatous damage well over a wider area.ConclusionThe wide-field SS-OCT deviation map exhibited good performance for distinguishing between eyes with EG and healthy eyes. The visualisation of the wider damaged area on the wide-field deviation map could be useful for the diagnosis of EG in clinical settings.

Imaging in diabetic retinopathy

2020 ◽  
pp. 161-170
Author(s):  
Sarita Jacob ◽  
Ramesh R. Sivaraj
Keyword(s):  
Optical Coherence Tomography ◽  
Diabetic Retinopathy ◽  
Prognostic Value ◽  
Diabetic Macular Oedema ◽  
Imaging Modalities ◽  
Wide Field ◽  
Optical Coherence ◽  
Diabetic Maculopathy ◽  
Fundus Fluorescein Angiography ◽  
Diagnostic And Prognostic Value

Imaging in diabetic retinopathy (DR) has developed over the years and the advantages are multifold. Various imaging modalities are currently available, which is of great diagnostic and prognostic value in the management of DR. Optical coherence tomography (OCT) has revolutionized the management of diabetic maculopathy. OCT has now become indispensable for initiating and assessing diabetic macular oedema (DMO) while on treatment with intravitreal injections. Recent introduction of optical coherence tomography angiography (OCTA) has significantly reduced the need for fundus fluorescein angiography (FFA) for macular ischaemia and proliferative retinopathy. Ultra-wide field (UWF) imaging modalities for colour fundus and UWF FFA are very useful to document and assess overall retinal state highlighting the periphery. Bscan ultrasonography of the fundus is an useful tool to assess retinal status in proliferative DR with vitreous haemorrhage.

Ocular albinism with mutation in GPR143: Findings in wide-field autofluorescence and optical coherence tomography

2019 ◽  
Vol 94 (6) ◽  
pp. 288-292
Author(s):  
M.J. Montoya Delgado ◽  
M.C. Astiazarán ◽  
F. Casanova Imken ◽  
A. Ramírez Estudillo ◽  
Á. Hernández Vázquez
Keyword(s):  
Optical Coherence Tomography ◽  
Wide Field ◽  
Optical Coherence ◽  
Ocular Albinism
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