scholarly journals Three-years follow-up swept source optical coherence tomography angiography findings in post-fever retinitis

2020 ◽  
Vol 68 (9) ◽  
pp. 2024
Author(s):  
MDheepak Sundar ◽  
Lubhavni Dewan ◽  
Rohan Chawla ◽  
Atul Kumar ◽  
Nasiq Hasan
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Optical Coherence ◽  
Swept Source

Multimodal Imaging in a Patient with Traumatic Choroidal Ruptures

2017 ◽  
Vol 27 (6) ◽  
pp. e175-e178 ◽  
Author(s):  
Luisa Pierro ◽  
Chiara Giuffrè ◽  
Alessandro Rabiolo ◽  
Marco Gagliardi ◽  
Alessandro Arrigo ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Multimodal Imaging ◽  
Optical Coherence Tomography Angiography ◽  
Ocular Trauma ◽  
Global Evaluation ◽  
Fundus Examination ◽  
Optical Coherence ◽  
Swept Source ◽  
Blunt Ocular Trauma

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. Dilated fundus examination of RE showed 2 peripapillary choroidal ruptures located temporally and inferiorly to the optic disc. Among different imaging tools useful in the diagnosis and study of choroidal ruptures, particular attention must be paid to OCT-A, which showed the lesions as breaks in the choriocapillaris plexus with a hypointense appearance due to the lack of substance. Moreover, along the break it was possible to see the projection of the underlying choroidal vasculature, which appeared hyperintense. The retinal vascular plexa were spared. Conclusions All patients presenting with blunt ocular trauma should undergo fundus examination to exclude damage to the optic nerve, retina, and choroid, and need close follow-up to avoid the development of secondary complications such as choroidal neovascularization. Optical coherence tomography angiography might add relevant information in the global evaluation and follow-up of choroidal ruptures in a noninvasive fashion, and could replace other invasive modalities such as FA or ICGA.

scholarly journals Comparison of swept-source versus spectral-domain optical coherence tomography angiography for detection of macular neovascularization

2021 ◽  
Author(s):  
Anna Lentzsch ◽  
Laura Schöllhorn ◽  
Christel Schnorr ◽  
Robert Siggel ◽  
Sandra Liakopoulos
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence Tomography Angiography ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Cross Sectional ◽  
Swept Source ◽  
En Face ◽  
Increased Sensitivity ◽  
Sensitivity Specificity ◽  
Subretinal Hyperreflective Material

Abstract Purpose To compare swept-source (SS) versus spectral-domain (SD) optical coherence tomography angiography (OCTA) for the detection of macular neovascularization (MNV). Methods In this prospective cohort study, 72 eyes of 54 patients with subretinal hyperreflective material (SHRM) and/or pigment epithelial detachment (PED) on OCT possibly corresponding to MNV in at least one eye were included. OCTA scans were acquired using two devices, the PLEX Elite 9000 SS-OCTA and the Spectralis SD-OCTA. Fluorescein angiography (FA) was used as reference. Two graders independently evaluated en face OCTA images using a preset slab as well as a manually modified slab, followed by a combination of en face and cross-sectional OCTA. Results Sensitivity (specificity) for the automated slabs was 51.7% (93.0%) for SS-OCTA versus 58.6% (95.3%) for SD-OCTA. Manual modification of segmentation increased sensitivity to 79.3% for SS-OCTA but not for SD-OCTA (58.6%). The combination of en face OCTA with cross-sectional OCTA reached highest sensitivity values (SS-OCTA: 82.8%, SD-OCTA: 86.2%), and lowest number of cases with discrepancies between SS-OCTA and SD-OCTA (4.2%). Fleiss kappa as measure of concordance between FA, SS-OCTA, and SD-OCTA was 0.56 for the automated slabs, 0.60 for the manual slabs, and 0.73 (good agreement) for the combination of en face OCTA with cross-sectional OCTA. Concordance to FA was moderate for the automated slabs and good for manual slabs and combination with cross-sectional OCTA of both devices. Conclusion Both devices reached comparable results regarding the detection of MNV on OCTA. Sensitivity for MNV detection and agreement between devices was best when evaluating a combination of en face and cross-sectional OCTA.

scholarly journals The Spectrum of Central Choriocapillaris Abnormalities on Swept-Source Optical Coherence Tomography Angiography in the Fellow Eye of Unilateral Exudative Age-Related Macular Degeneration Patients: From Flow Deficits to Subclinical Non-Exudative Neovascularization

2021 ◽  
Vol 10 (12) ◽  
pp. 2658
Author(s):  
Alexis Khorrami Kashi ◽  
Eric Souied ◽  
Selim Fares ◽  
Enrico Borrelli ◽  
Vittorio Capuano ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Macular Degeneration ◽  
Optical Coherence Tomography Angiography ◽  
Clinical Findings ◽  
Age Related Macular Degeneration ◽  
Optical Coherence ◽  
Swept Source ◽  
Exudative Amd ◽  
Age Related ◽  
Fellow Eyes

We evaluated the spectrum of choriocapillaris (CC) abnormalities in the fellow eyes of unilateral exudative age-related macular degeneration (AMD) patients using swept-source optical coherence tomography angiography (SS-OCTA). Fellow eyes of unilateral exudative AMD patients were prospectively included between May 2018 and October 2018. Patients underwent a multimodal imaging including a SS-OCTA. Demographics and clinical findings were analyzed. The estimated prevalence of macular neovascularization (MNV) was computed. Number and size of flow deficits (FDs) and percentage of flow deficits (FD%) were computed on the compensated CC flow images with the Fiji software. We included 97 eyes of 97 patients (mean age was 80 ± 7.66 years, 39 males, 58 females). The prevalence of MNV in the studied eyes was 8.25% (8/97 eyes). In the 89 non-neovascular eyes, FD% averaged 45.84% ± 11.63%, with a corresponding total area of FDs of 4.19 ± 1.12 mm2. There was a higher prevalence of drusenoid pigment epithelial detachment in eyes with subclinical neovascularization (p = 0.021). Fellow eyes with unilateral exudative AMD encompassed a series of CC abnormalities, from FDs of the aging CC to subclinical non-exudative MNV.

scholarly journals Swept Source Optical Coherence Tomography Angiography for Contact Lens-Related Corneal Vascularization

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Marcus Ang ◽  
Yijun Cai ◽  
Anna C. S. Tan
Keyword(s):  
Optical Coherence Tomography ◽  
Image Quality ◽  
Contact Lens ◽  
Optical Coherence Tomography Angiography ◽  
Quality Score ◽  
Image Quality Score ◽  
Optical Coherence ◽  
Swept Source ◽  
Corneal Vascularization ◽  
Significant Difference

Purpose. To describe a novel technique of adapting a swept-source optical coherence tomography angiography (OCTA) to image corneal vascularization.Methods. In this pilot cross-sectional study, we obtained 3 × 3 mm scans, where 100,000 A-scans are acquired per second with optical axial resolution of 8 μm and lateral resolution of 20 μm. This was performed with manual “XYZ” focus without the anterior segment lens, until the focus of the corneoscleral surface was clearly seen and the vessels of interest were in focus on the corresponding red-free image. En face scans were evaluated based on image quality score and repeatability.Results. We analyzed scans from 10 eyes (10 patients) with corneal vascularization secondary to contact lens use in 4 quadrants, with substantial repeatability of scans in all quadrants (mean image quality score 2.7 ± 0.7;κ=0.75). There was no significant difference in image quality scores comparing quadrants (superior temporal: 2.9 ± 0.6, superior nasal: 2.8 ± 0.4, inferior temporal: 2.5 ± 0.9, and inferior nasal: 2.4 ± 1.0;P=0.276) and able to differentiate deep and superficial corneal vascularization.Conclusion. This early clinical study suggests that the swept-source OCTA used may be useful for examining corneal vascularization, which may have potential for clinical applications such as detecting early limbal stem cell damage.

Sign in / Sign up

Export Citation Format

Share Document