A5025841684- Glaucoma and retinal disorders
- Retinal Diseases and Treatments
- Retinal Imaging and Analysis
- Retinal and Macular Surgery
- Retinal and Optic Conditions
- Ocular Diseases and Behçet’s Syndrome
- Corneal surgery and disorders
- Intraocular Surgery and Lenses
- Ophthalmology and Visual Impairment Studies
- Blood Pressure and Hypertension Studies
- Ocular Infections and Treatments
- Cerebral Venous Sinus Thrombosis
- Ocular Surface and Contact Lens
- Optical Coherence Tomography Applications
- Tumors and Oncological Cases
- Cancer and Skin Lesions
- Multiple Sclerosis Research Studies
- Cardiovascular Health and Disease Prevention
- Cerebral Palsy and Movement Disorders
- Cerebrovascular and Carotid Artery Diseases
- Thermoregulation and physiological responses
- Ophthalmology and Eye Disorders
- Ocular Oncology and Treatments
- Traumatic Ocular and Foreign Body Injuries
- Neurosurgical Procedures and Complications
Changwon National University
2021-2023
Gyeongsang National University
2021-2023
Chungnam National University
2017-2021
Weatherford College
2021
Chungnam National University Hospital
2019-2021
Seoul National University Bundang Hospital
2017
Many studies have reported the effect of hypertension on microcirculation retina. Advance optical coherence tomography angiography (OCTA) allows us more detailed observations Therefore, we compared OCTA parameters between chronic (disease duration at least 10 yrs; Group A, 45 eyes), relieved hypertensive retinopathy (grade IV HTNR < 1 yr prior; B, 40 and normal controls [Group C (50 eyes) ≥ 50 yrs old D old]. A 3 × mm macular scan was performed in each group by OCTA. In vessel density full,...
Abstract Diabetes is expected to accelerate age-related ganglion cell–inner plexiform layer (GC-IPL) loss, but there limited information on the rate of reduction in GC-IPL thicknesses. We aimed evaluate thickness diabetic patients, and compare rates between patients without with retinopathy (DR). included 112 eyes diabetes [49 DR (no-DR group) 63 mild moderate non-proliferative (NPDR group)] normal controls (control this study. Macular all participants was measured for 3 years at 1-year...
To compare retinal thickness between patients with chronic hypertension without retinopathy, hypertensive Keith-Wagener-Barker Grade IV status, and normal controls using spectral domain optical coherence tomography.In this retrospective study, we analyzed who visited our clinic from January 2013 to February 2016. Of those included, 58 eyes of were in the healthy control group (Group A), 37 retinopathy (disease duration at least 10 years; Group B), 31 relieved (Grade a year or more ago but no...
To identify the effects of prolonged type 2 diabetes (T2DM) on macular microcirculation and inner retinal layer in diabetic eyes without clinical retinopathy (DR).97, 92, 57 control, patients with T2DM < 10 years (DM group one), ≥ two) were enrolled. The ganglion cell-inner plexiform (GC-IPL) thickness superficial vessel density (VD) compared. Linear regression analyses performed to factors associated VD patients.GC-IPL thicknesses DM one, two 84.58 ± 0.89, 83.49 0.70, 79.04 0.96 μm,...
Purpose: To determine longitudinal changes in the peripapillary retinal nerve fiber layer (pRNFL) thickness patients with hypertension (HTN). Methods: Participants without any ophthalmic disease were divided into two groups: an HTN group (50 eyes) that included for ≥5 years and a control group. After initial visit, pRNFL thicknesses measured four more times at 1-year intervals using spectral-domain optical coherence tomography. The was fitted linear mixed models. Univariate multivariate...
Abstract The purpose of this study was to investigate changes in peripapillary microvasculature using optical coherence tomography angiography (OCTA) systemic hypertension (HTN) patients. This a cross-sectional study. Based on the duration HTN, seventy-eight HTN patients were divided into two groups. (HTN group 1: <10 years, 38 eyes; 2: ≥10 40 eyes) and 90 control subjects. All subjects underwent 6 × mm OCTA scan centered optic nerve head. We analyzed vessel density (VD) perfusion (PD)...
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 diseases were recruited. OCT scans performed sequentially a Cirrus HD 5000 Plex Elite 9000. Images analyzed by two independent observers. Each image was independently measured twice each observer to intraobserver repeatability. Results A total 55 eyes included. The...
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 16-mm 1-line scan SS-OCT. CTs were measured at following 12 points: 3 points 900 µm, 1800 2700 µm away from nasal optic disc margin (nasal peripapillary area), 1 point subfovea, 6 subfovea temporal areas (macular 2 peripheral 5400 (peripheral area)....
Importance Fungal endophthalmitis caused by contaminated medical products is extremely rare; it follows an intractable clinical course with a poor visual prognosis. Objective To report the epidemiologic and features treatment outcomes of nationwide fungal outbreak after cataract surgery as result viscoelastic agents in South Korea. Design, Setting, Participants This was retrospective case series analysis data from multiple institutions Korea conducted September 1, 2020, to October 31, 2021....
Purpose: To determine the repeatability of measuring thickness central macula, retinal nerve fiber layer, and ganglion cell–inner plexiform layer (GC-IPL) using spectral domain optical coherence tomography (Cirrus HD-OCT) in eyes with age-related macular degeneration. Methods: One hundred thirty-four were included. The measurement was assessed by an experienced examiner who performed two consecutive measurements a 512 × 128 cube scan 200 optic disk scan. assess changes morphology patients...
Abstract Purpose We investigated the wide‐field choroidal thickness (CT) using swept‐source optical coherence tomography (SS‐OCT) and compared characteristics of layer between pachychoroid normochoroid groups. Methods A total 120 eyes from normal subjects were included. All divided into two groups according to subfoveal CT (≥300 μm, group; <300μm, group). underwent an HD spotlight 16 mm scan SS‐OCT. The was measured at following 12 points: subfoveal, 3 points in nasal peripapillary area,...
Hypertension (HTN) is expected to accelerate age-related ganglion cell-inner plexiform layer thickness (GC-IPLs) reduction, but there limited information on the reduction rate of GC-IPLs in HTN patients. We investigate longitudinal changes GC-IPL patients with HTN.We performed a prospective, and observational study design. Participants were divided into two groups: group (49 eyes) control (56 eyes). After initial visit, measured four times at 1-year intervals using spectral-domain optical...
Purpose: To investigate the association between myopia and peripapillary retinal nerve fiber layer (pRNFL) thickness in diabetic patients without retinopathy (DR). Methods: A total of 271 eyes participants were included. They divided into four groups according to presence (≤ –3 diopters [D]) diabetes DR: (1) control group (n = 76), (2) 57), (3) 82), (4) + 56). The average sector RNFL thicknesses measured compared among determine effects diabetes. Covariates adjusted using analyses...
This study aimed to quantify the Haller vessel and choriocapillaris (CC) parameters in drusen subtypes nonexudative age-related macular degeneration (AMD) pachydrusen. Ninety-five eyes of 80 patients 28 control were categorized into soft drusen, subretinal drusenoid deposit (SDD), plus SDD, pachydrusen, groups. The diameter, length intersections vessels total area, size number CC flow voids quantified using en face optical coherence tomography (OCT) or OCT angiography. pachydrusen group...
<b><i>Purpose:</i></b> To investigate the central macular thickness (CMT) and retinal nerve fiber layer (RNFL) in eyes with Vogt-Koyanagi-Harada (VKH) disease associated optic disc swelling serous detachment through a 24-month follow-up period. <b><i>Methods:</i></b> We prospectively investigated 28 of 14 treatment-naïve patients acute VKH 30 15 normal individuals to compare changes CMT average RNFL thickness....
The interocular difference in the ganglion cell-inner plexiform layer thickness showed a significant correlation with diabetic retinopathy (DR) severity.The purpose of this study was to analyze differences foveal, retinal nerve fiber (RNFL), and (GC-IPL) DR patients using spectral-domain optical coherence tomography.A total 508 eyes from 254 different severities 184 92 control subjects were included. GC-IPL, RNFL thicknesses measured, these correlated patients.The average GC-IPL...
To investigate the effects of axial length (AL) on peripapillary microvascular density acquired from optical coherence tomography angiography (OCTA).Retrospective observational study. A total 111 eyes normal healthy subjects were examined. The divided into three groups according to AL: Group 1 (AL: < 24.0 mm; 35 eyes), 2 24.0-25.99 37 and 3 ≥ 26 39 eyes). Peripapillary OCTA images using 6× 6 mm scans, vessel (VD) perfusion (PD) superficial capillary plexus calculated automatically. VD PD...
Purpose: It is hypothesized that an unstable tear film would affect the quality and repeatability of optical coherence tomography angiography (OCTA). Therefore, OCTA according to break-up time (TBUT) was compared. Methods: The 3 × performed twice and, eyes were divided into groups TBUT (Group 1: ≤ 5 seconds, 43 eyes; Group 2: seconds < 10 35 3: > 34 eyes). intraclass correlation coefficient, coefficient variation, test–retest SD calculated Results: signal strengths 9.1 ± 1.2, 9.5 0.8,...
The Bruch’s membrane opening-minimum rim width (BMO-MRW) is a recently introduced parameter of the neuroretinal rim. We analyzed repeatability spectral-domain optical coherence tomography (SD-OCT) measurements BMO-MRW in epiretinal (ERM) patients with peripapillary involvement, since surface around optic disc distorted such patients. and retinal nerve fiber layer (RNFL) thickness were performed using SD-OCT prospectively enrolled ERM age-matched healthy control individuals. After two...
Abstract This is a prospective observational study to establish the short- and long-term repeatability of measurements peripapillary optical coherence tomography angiography (OCTA) parameters in healthy eyes identify factors affecting repeatability. We enrolled 84 eyes. Participants with history any ophthalmic disease (except high myopia) or intraocular surgery were excluded from study. An experienced examiner performed OCTA using disc-centered 6 × mm scans. All examinations conducted twice...
Objective To investigate the thicknesses of ganglion cell-inner plexiform layer (GC-IPL) and retinal nerve fiber (RNFL) fellow eyes patients with unilateral exudative age-related macular degeneration (AMD). Methods A total 107 AMD [34 typical choroidal neovascularization (tCNV), Group A; 73 polypoidal vasculopathy (PCV), B] normal control (Group C) were included. Drusen subretinal drusenoid deposits assessed in all participants using fundus photography, autofluorescence, optical coherence...
Background: We aimed to study the bilateral choroidal thickness (CT) symmetry and difference in uncomplicated pachychoroid subjects using wide-field swept-source optical coherence tomography (SS-OCT). Methods: All underwent a 16-mm one-line scan SS-OCT. Bilateral CT was measured at, compared among, following 12 points: three points at 900-µm intervals from nasal optic disc margin (nasal peripapillary area), one point subfovea, six fovea temporal areas (macular two peripheral 5400 8100 µm...
A few cases of optic neuropathy presumed to be caused by vincristine have been reported. However, none described multimodal imaging findings. Here, we report abnormal magnetic resonance (MRI) and optical coherence tomography (OCT) findings in a putative case vincristine-induced neuropathy.A 9-year-old boy with Burkett lymphoma who had no visual problems noticed blurred vision both eyes 22 days after the first maintenance therapy for lymphoma; gradually worsened. At that time, best-corrected...
Spectral-domain optical coherence tomography (SD-OCT) must accurately identify and measure the peripapillary retinal nerve fiber layer (pRNFL) thickness to improve repeatability reproducibility, reduce measurement errors. Because Weiss ring can be located in front of optic disc, we hypothesized that it may affect pRNFL measurements obtained using SD-OCT. We retrospectively reviewed medical records patients with (group W) without N) ring, observed on OCT fundus image an RNFL map devised Optic...