scholarly journals Optimized imaging of the suprachoroidal space with swept-source OCT

2019 ◽  
Vol 16 (4) ◽  
pp. 323-328
Author(s):  
Joel Hanhart ◽  
Rozenman Yaacov
Keyword(s):  
Optical Coherence Tomography ◽  
Enhanced Depth Imaging ◽  
Swept Source ◽  
Depth Imaging ◽  
New Approach ◽  
Suprachoroidal Space ◽  
Outer Border ◽  
Minimum Age ◽  
Swept Source Oct

Purpose: To compare enhanced depth imaging (EDI) and non-EDI swept source optical coherence tomography (SS-OCT) in their ability to capture the suprachoroidal space (SCS). Materials and methods: Twenty volunteers with a minimum age of 18 years without any ocular pathology and refractive error below Å} 2 diopters underwent SS-OCT foveal scanning, with and without EDI. Masked averaged B-scan lines were analyzed for presence of the SCS. When the SCS was seen, the percentage of the scan on which this structure could be unequivocally observed was measured. Scores obtained from the images taken with or without EDI were then compared. Results: Thirty-seven eyes were analysed, since three eyes of three different patients were eliminated, as the outer border of the choroid was insufficiently delineated with both modalities. The SCS was not detected at all on 14 pictures (37.8%) obtained by non-EDI SS-OCT and 9 pictures (24.3%) obtained by EDI SS-OCT. When the SCS was detected with both modalities, it was observable on 27.2+/-24.2% of the scan without EDI and 40.4+/-30.3 of the scan with EDI (p < .001) Conclusions: EDI SS-OCT enables a more frequent and extensive visualization of the suprachoroidal space than non-EDI SS-OCT. This new approach could be considered as the most accurate modality to currently visualize the SCS in vivo.

scholarly journals Evaluation of Choroidal Thickness Using Optical Coherent Tomography: A Review

2021 ◽  
Vol 8 ◽  
Author(s):  
Rui Xie ◽  
Bingjie Qiu ◽  
Jay Chhablani ◽  
Xinyuan Zhang
Keyword(s):  
Optical Coherence Tomography ◽  
Choroidal Thickness ◽  
Enhanced Depth Imaging ◽  
Swept Source ◽  
Depth Imaging ◽  
Spectral Domain Oct ◽  
Tremendous Progress ◽  
Measurement Methodology ◽  
Swept Source Oct ◽  
Spectrum Disorders

The choroid is the main source of blood and nourishment supply to the eye. The dysfunction of the choroid has been implicated in various retinal and choroidal diseases. The identification and in-depth understanding of pachychoroid spectrum disorders are based on the tremendous progress of optical coherence tomography (OCT) technology in recent years, although visibility of choroid is challenging in the era of the time or spectral domain OCT. The recent rapid revolution of OCTs, such as the enhanced depth imaging OCT and the swept-source OCT, has greatly contributed to the significant improvement in the analysis of the morphology and physiology of the choroid precisely, especially to the choroid–scleral boundary and vasculature. The present review highlights the recently available evidence on the measurement methodology and the clinical significance of choroidal thickness in retinal or choroidal disorders.

scholarly journals In vivo analysis of glaucoma-related features within the optic nerve head using enhanced depth imaging optical coherence tomography

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0180128 ◽  
Author(s):  
Tiago S. Prata ◽  
Flavio S. Lopes ◽  
Vitor G. Prado ◽  
Izabela Almeida ◽  
Igor Matsubara ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Optic Nerve ◽  
Optic Nerve Head ◽  
Enhanced Depth Imaging ◽  
Optical Coherence ◽  
Depth Imaging ◽  
In Vivo Analysis ◽  
Imaging Optical Coherence Tomography

scholarly journals Updates in imaging in ocular oncology

F1000Research ◽  
2019 ◽  
Vol 8 ◽  
pp. 1706 ◽  
Author(s):  
Jose R. Davila ◽  
Prithvi Mruthyunjaya
Keyword(s):  
Optical Coherence Tomography ◽  
Vision Loss ◽  
Choroidal Melanoma ◽  
Enhanced Depth Imaging ◽  
Optical Coherence ◽  
Swept Source ◽  
Depth Imaging ◽  
Non Invasive ◽  
Ophthalmic Imaging ◽  
The Impact

Innovations in ophthalmic imaging have made a profound impact on the diagnosis and treatment of ophthalmic disease. In ocular oncology, the development of optical coherence tomography with enhanced depth imaging and swept source technologies has made it possible to visualize the anatomical characteristics of retinoblastoma and uveal melanoma with a level of detail previously unobtainable on clinical exam alone. As a result, our understanding of the pathophysiology of vision loss in choroidal melanoma in particular has improved. These modalities have also helped identify fundoscopically “invisible” tumors and risk stratify pre-malignant choroidal lesions, making a strong case for their inclusion in all screening evaluations. Optical coherence tomography angiography, on the other hand, has allowed non-invasive imaging of the retinal and uveal vasculatures, providing insight into vascular changes associated with malignant transformation and vision loss following exposure to radiation. While the impact of new imaging technologies on clinical outcomes and overall survival in ocular oncology has yet to be determined, several reports cited herein offer promising results.

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