Results 111 to 120 of about 14,632 (209)

Blood flow pattern in a choroidal hemangioma imaged on swept-source-optical coherence tomography angiography

open access: yesIndian Journal of Ophthalmology, 2017
This report demonstrates the blood flow pattern in a case of choroidal hemangioma (CH) using swept-source-optical coherence tomography angiography (SS-OCTA).
Brijesh Takkar   +4 more
doaj   +1 more source

In Vivo Photoacoustic Imaging of Anterior Ocular Vasculature: A Random Sample Consensus Approach [PDF]

open access: yes, 2019
Visualizing ocular vasculature is important in clinical ophthalmology because ocular circulation abnormalities are early signs of ocular diseases. Photoacoustic microscopy (PAM) images the ocular vasculature without using exogenous contrast agents ...
Jeon, S.   +7 more
core   +1 more source

Longitudinal Assessment of Vascularity in Actinic Keratosis Using Dynamic Optical Coherence Tomography: Practical Considerations and Theoretical Insights

open access: yesJournal of Biophotonics, Volume 19, Issue 3, March 2026.
Few resources exist to train clinical researchers on how to ensure robust D‐OCT data collection. This study identifies hallmarks of poor image quality, particularly those relevant to imaging actinic keratosis, to improve data collection, guide data curation, and avoid biasing study results.
Gavrielle R. Untracht   +4 more
wiley   +1 more source

Comparative study between patients with subclinical diabetic retinopathy and healthy individuals in the retinal microvascular changes using optical coherence tomography angiography

open access: yesDelta Journal of Ophthalmology, 2019
Purpose The aim of this study was to compare between patients with subclinical diabetic retinopathy (DR) and healthy individuals in the retinal microvascular changes including vascular density (VD), perfusion density (PD), and foveal avascular zone (FAZ)
Abd El-Magid M Tag El-Din
doaj   +1 more source

Dynamic Retinal Pathology in Glaucoma Progression Revealed by High‐Resolution Functional Imaging In Vivo

open access: yesLaser &Photonics Reviews, Volume 20, Issue 5, 6 March 2026.
In this work, we investigated the dynamic retinal pathology of glaucoma from onset to late stages through longitudinal in vivo high‐resolution imaging in a silicone oil‐induced ocular hypertension (SOHU) glaucoma mouse model. We developed an optimized adaptive optics two‐photon excitation fluorescence microscopy (AO‐TPEFM) technique for morphological ...
Yiming Fu   +6 more
wiley   +1 more source

Acute zonal occult outer retinopathy: Is optical coherence tomography angiography useful?

open access: yesIndian Journal of Ophthalmology, 2018
A 44-year-old female presented with central vision loss and photopsia in both eyes since 2 months. Multimodal imaging, field defects, electroretinogram abnormalities, and spectral domain optical coherence tomography changes were all suggestive of acute ...
Anmol U Naik   +2 more
doaj   +1 more source

Visible light optical coherence tomography angiography (vis-OCTA) facilitates local microvascular oximetry in the human retina

open access: yesBiomedical Optics Express, 2020
We report herein the first visible light optical coherence tomography angiography (vis-OCTA) for human retinal imaging. Compared to the existing vis-OCT systems, we devised a spectrometer with a narrower bandwidth to increase the spectral power density for OCTA imaging, while retaining the major spectral contrast in the blood.
Weiye Song   +6 more
openaire   +2 more sources

Guidelines on Optical Coherence Tomography Angiography Imaging: 2020 Focused Update

open access: yesOphthalmology and Therapy, 2020
Optical coherence tomography angiography (OCTA) has significantly expanded our knowledge of the ocular vasculature. In this review, we provide a discussion of the fundamental principles of OCTA and the application of this imaging modality to study the ...
Enrico Borrelli   +7 more
doaj   +1 more source

Role of Optical Coherence Tomography Angiography (OCTA) in Anterior Ischemic Optic Neuropathy

open access: yesOphthalmologica Indonesiana
Introduction: Anterior ischemic optic neuropathy (AION) is the most common type of optic neuropathy with symptoms of sudden and painless visual field defect and vision loss. Although evaluating the nonperfusion areas of the vascular ischemia have traditionally been visualized through fluorescein angiography, OCTA has proven to be effective in ...
Calista Nathasya Gunawan, Syntia Nusanti
openaire   +1 more source

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