Articles that mention Chungnam National University Hospital -Optical Coherence Tomography News

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1. Mentioned In 30 Articles
2. Wide-Field Swept-Source Optical Coherence Tomography Analysis of Interocular Symmetry of Choroidal Thickness in Healthy Young Individuals
  
  Explore IOVS Journal Mar 4 2021 Ophthalmology
  
  Purpose: The purpose of this paper was to study the bilateral choroidal thickness (CT) symmetry and differences in healthy individuals using wide-field swept-source optical coherence tomography (SS-OCT). Methods: All participants underwent a wide-field 16-mm 1-line scan using SS-OCT. CTs were measured at the following 12 points: 3 points at 900 m, 1800 m, and 2700 m away from the nasal optic disc margin (nasal peripapillary area), 1 point at the ...
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  Mentions: Chungnam National University Hospital
3. Peripapillary vessel parameters and mean ocular perfusion pressure in young healthy eyes: OCT angiography study
  
  Explore BJO Online Jul 28 2020 Ophthalmology
  
  Background To investigate the relationship between estimated mean ocular perfusion pressure (MOPP) and peripapillary perfusion density (PD) or vessel density (VD) as measured by spectral-domain optical coherence tomography angiography (OCTA) in young healthy eyes. Methods 132 healthy participants (264 eyes) under 45 years of age underwent optic disc OCTA scan sized 33 mm to acquire PD and VD in the superficial vascular complex (SVC). Optic nerve head (ONH) parameters including ...
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  Mentions: Seoul National University Chungnam National University Hospital
4. Repeatability of measuring the vessel density in patients with retinal vein occlusion: An optical coherence tomography angiography study
  
  Explore Journals | PLOS Jun 26 2020 Ophthalmology
  
  Purpose To determine the repeatability of superficial vessel density measurements using Spectral domain Ocular coherence tomography angiography(SD-OCTA) in patients diagnosed with retinal vein occlusion(RVO). Design Prospective observational study. Subjects Patients who visited our retinal clinic from August 2017 to August 2018, diagnosed with RVO were recruited for the study. Methods Two consecutive 33 mm pattern scans were performed using the Cirrus HD-OCT 5000 along with AngioPlex software (Carl ...
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  Mentions: Carl Zeiss Meditec Konyang University Chungnam National University Hospital
5. A comparison of choroidal thicknesses between pachychoroid and normochoroid eyes acquired from wide‐field swept‐source OCT
  
  Explore Wiley Online Library Jun 24 2020 Ophthalmology
  
  Purpose We investigated the wide‐field choroidal thickness (CT) using swept‐source optical coherence tomography (SS‐OCT) and compared the characteristics of the choroidal layer between pachychoroid and normochoroid groups. Methods A total of 120 eyes from 120 normal subjects were included. All subjects were divided into two groups according to the subfoveal CT (300 m, pachychoroid group; 300m, normochoroid group). All subjects underwent an HD spotlight 16 mm scan ...
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  Mentions: Konyang University Chungnam National University Hospital
6. Effects of Prolonged Type 2 Diabetes on the Inner Retinal Layer and Macular Microvasculature: An Optical Coherence Tomography Angiography Study
  
  Explore MDPI Open Access Journals Platform Jun 13 2020 Ophthalmology
  
  Purpose: To identify the effects of prolonged type 2 diabetes (T2DM) on macular microcirculation and the inner retinal layer in diabetic eyes without clinical diabetic retinopathy (DR). Methods: 97, 92, and 57 eyes in the control, patients with T2DM 10 years (DM group one), and patients with T2DM 10 years (DM group two) were enrolled. The ganglion cell-inner plexiform layer (GC-IPL) thickness and superficial vessel density (VD) were compared. Linear ...
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  Mentions: Konyang University Chungnam National University Hospital
7. Peripapillary microvascular changes in patients with systemic hypertension: An optical coherence tomography angiography study
  
  Explore Nature Publishing Group Apr 19 2020 Ophthalmology
  
  The purpose of this study was to investigate changes in peripapillary microvasculature using optical coherence tomography angiography (OCTA) in systemic hypertension (HTN) patients. This was a cross-sectional study. Based on the duration of HTN, seventy-eight HTN patients were divided into two groups. (HTN group 1: 10 years, 38 eyes; HTN group 2: 10 years, 40 eyes) and 90 control subjects. All subjects underwent 6 6mm OCTA scan centered on the ...
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  Mentions: Chungnam National University Hospital
8. Comparison of choroidal thickness measurements using swept source and spectral domain optical coherence tomography in pachychoroid diseases
  
  Explore Journals | PLOS Mar 4 2020 Ophthalmology
  
  Purpose To determine the comparability of choroidal thickness (ChT) measurements using swept source (SS) and spectral domain (SD) optical coherence tomography (OCT) devices in patients with pachychoroid diseases. Methods Patients with pachychoroid diseases were recruited. OCT scans were performed sequentially with a Cirrus HD OCT 5000 and Plex Elite 9000. Images were analyzed by two independent observers. Each image was independently measured twice by each observer to determine the intraobserver ...
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  Mentions: Chungnam National University Hospital
9. Signal Strength as an Important Factor in the Analysis of Peripapillary Microvascular Density Using Optical Coherence Tomography Angiography
  
  Explore Nature Publishing Group Nov 12 2019 Ophthalmology
  
  The quality of the scan image is important in peripapillary circulation analysis using optical coherence tomography angiography (OCTA). We aimed to investigate the effects of signal strength (SS) on the peripapillary microvascular density acquired from OCTA. A total of 259 eyes from 259 young healthy subjects were included. Peripapillary OCTA images using 33mm angiography scan were acquired from all participants. Subjects were divided into four groups according to the SS ...
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  Mentions: Chungnam National University Hospital
10. Factors Affecting Repeatability of Assessment of the Retinal Microvasculature Using Optical Coherence Tomography Angiography in Healthy Subjects
  
  Explore Nature Publishing Group Nov 12 2019 Ophthalmology
  
  Various factors can affect repeatability of optical coherence tomography angiography (OCTA) measurements, and they have not been studied sufficiently. We aimed to investigate the factors associated with the repeatability of automated superficial retinal vessel density (VD) and foveal avascular zone (FAZ) metrics acquired from OCTA. A total of 141 normal eyes from 141 healthy subjects were included, and two consecutive macular 66-mm angiography scans were performed. VD, perfusion density (PD ...
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  Mentions: Chungnam National University Hospital
11. Peripapillary microvasculature in patients with diabetes mellitus: An optical coherence tomography angiography study
  
  Explore Nature Publishing Group Nov 5 2019 Ophthalmology
  
  To evaluate changes in peripapillary microvascular parameters in diabetes mellitus (DM) patients using optical coherence tomography angiography (OCTA). Seventy-one diabetic patients (40 in the no diabetic retinopathy [DR] group and 31 in the non-proliferative DR [NPDR] group) and 50 control subjects. OCTA (Zeiss HD-OCT 5000 with AngioPlex) 66mm scans centered on the optic disc were analyzed. Peripapillary vessel density (VD), perfusion density (PD) in superficial capillary plexus (SCP) were automatically ...
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  Mentions: Carl Zeiss Meditec Chungnam National University Hospital
12. Influence of Epiretinal Membranes on the Retinal Nerve Fiber Layer Thickness Measured by Spectral Domain Optical Coherence Tomography in Glaucoma
  
  Explore KoreaMed Synapse Oct 19 2019 Ophthalmology
  
  Purpose We investigated changes in the thickness of the peripapillary retinal nerve fiber layer (RNFL) following the onset of an epiretinal membrane (ERM) in glaucoma patients. Methods Among regularly monitored glaucoma patients, patients with a newly diagnosed ERM were consecutively enrolled. Before and after the onset of ERM, the RNFL thickness was measured using spectral domain optical coherence tomography, and a visual field examination was performed using a Humphrey field ...
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  Mentions: Chungnam National University Hospital
13. Characteristics of retinal layer thickness in acute anterior uveitis: an optical coherence tomography study
  
  Explore Wiley Online Library Sep 28 2019 Ophthalmology
  
  Purpose To determine the changes in peripapillary retinal nerve fiber layer (pRNFL), macular and ganglion cell‐inner plexiform layer (GC‐IPL) thicknesses in patients with acute anterior uveitis (AAU). Methods Patients diagnosed with unilateral non‐infectious AAU and normal control were enrolled retrospectively. Optical coherence tomography scans were performed during the initial active phase and inactive phase of AAU. Patients were followed for at least 3 months after resolution of ...
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  Mentions: Chungnam National University Hospital
14. Long‐term repeatability of optical coherence tomography angiography parameters in healthy eyes
  
  Explore Wiley Online Library Sep 17 2019 Ophthalmology
  
  Purpose To determine the long‐term repeatability of optical coherence tomography angiography (OCTA) parameters in normal eyes. Methods We prospectively enrolled 104 normal eyes. Participants were divided into three groups based on differences in the signal strength (SS) of OCTA scans obtained at two visits at least 6 months apart: group 1, SS difference = 2; group 2, 1; group 3, 0. We measured a foveal centred scan area of 3 ...
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  Mentions: Chungnam National University Hospital
15. Interocular Symmetry of Optical Coherence Tomography Angiography Parameters in Normal Eyes of Korean Adults
  
  Explore KoreaMed Synapse Jul 27 2019
  
  Purpose To evaluate the interocular symmetry of microvascular parameters measured by optical coherence tomography angiography (OCTA) in normal eyes of Korean adults. Methods We retrospectively reviewed the retinal microvascular structure of 91 healthy Korean subjects (182 eyes). We used OCTA to measure the area of the foveal avascular zone (FAZ), vessel density (VD), and perfusion density (PD) in both eyes. Intraclass correlation coefficients (ICCs), coefficients of variation (CVs), and Pearson ...
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  Mentions: Chungnam National University Hospital
16. Serous Retinal Detachment Causes a Transient Reduction on Spectral Domain OCT Estimates of Ganglion Cell Layer Thickness
  
  Explore LWW Online Mar 1 2019 Ophthalmology
  
  SIGNIFICANCE During the acute stage of central serous chorioretinopathy (CSC) with retinal elevation, the spectral domain optical coherence tomography (SD-OCT) estimate of ganglion cell layer complex thickness is reduced. Thickness returns to normal after resolution of the event. Measurement error is at least partially responsible for this effect. The reduction in ganglion cell layer complex thickness does not represent atrophy and is not predictive of a poor outcome. PURPOSE We ...
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  Mentions: Carl Zeiss Meditec Chungnam National University Hospital
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