1. Articles from Jung-Yeul Kim

    1-11 of 11
    1. Retinal Microvascular Change in Hypertension as measured by Optical Coherence Tomography Angiography

      Retinal Microvascular Change in Hypertension as measured by Optical Coherence Tomography Angiography

      Many studies have reported the effect of hypertension on microcirculation of the retina. Advance of optical coherence tomography angiography (OCTA) allows us more detailed observations of microcirculation of the retina. Therefore, we compared OCTA parameters between chronic hypertension (disease duration of at least 10 yrs; Group A, 45 eyes), relieved hypertensive retinopathy (grade IV HTNR < 1 yr prior; Group B, 40 eyes), and normal controls [Group C (50 eyes) ≥ 50 yrs old and Group D (50 eyes) < 50 yrs old]. A 3 × 3 mm macular scan was performed in each group by OCTA. In vessel density of 3 mm full ...

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    2. Longitudinal Changes of Retinal Thicknesses in Branch Retinal Artery Occlusion: Spectral-Domain Optical Coherence Tomography Study

      Longitudinal Changes of Retinal Thicknesses in Branch Retinal Artery Occlusion: Spectral-Domain Optical Coherence Tomography Study

      Purpose : To analyze longitudinal thickness changes in the overall macula, ganglion cell–inner plexiform layer (GC-IPL), and peripapillary retinal nerve fiber layer (pRNFL) using spectral-domain optical coherence tomography in branch retinal artery occlusion (BRAO). Methods : A prospective analysis was conducted in patients with BRAO. The thicknesses of the overall macula, GC-IPL, and pRNFL were measured at the initial visit, and at 1, 3, 6, and 12 months. Changes in the occluded areas of the affected and unaffected eyes were analyzed, and the nonoccluded areas were compared. Results : In the occluded areas of the affected eyes, the only overall macular thickness ...

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    3. Long-term reproducibility of GC-IPL thickness measurements using spectral domain optical coherence tomography in eyes with high myopia

      Long-term reproducibility of GC-IPL thickness measurements using spectral domain optical coherence tomography in eyes with high myopia

      Although ganglion cell inner plexiform layer (GC-IPL) analysis in the patients with high myopia is useful, there have been few reports to analyze of the reliability for long-term measured GC-IPL thickness. We aimed to analyze the long-term reproducibility of thickness measurements of the GC-IPL using spectral-domain optical coherence tomography (SD-OCT) in patients with high myopia and identify factors that affect such reproducibility. 99 eyes from 99 patients with high myopia without any other ophthalmc disorder such as glaucoma or retinal diseases were included. Two serial SD-OCT (Cirrus-HD) macular scans taken at ≧ 1 year intervals were analyzed. The intraclass correlation coefficient ...

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    4. Repeatability of vessel density measurements using optical coherence tomography angiography in retinal diseases

      Repeatability of vessel density measurements using optical coherence tomography angiography in retinal diseases

      Aim To analyse the repeatability of vessel density (VD) measurements using optical coherence tomography angiography (OCTA) in patients with retinal diseases. Methods Two consecutive VD measurements using OCTA were analysed prospectively in patients with retinal diseases (diabetic macular oedema (DME), retinal vein occlusion (RVO) with macular oedema, epiretinal membrane (ERM), wet age-related macular degeneration (AMD)). The intraclass correlation coefficient (ICC), coefficient of variation (CV) and test-retest SD of VD measurements were assessed, and linear regression analyses were conducted to identify factors related to repeatability. Results A total of 134 eyes were analysed involving 20 eyes with DME, 44 eyes with ...

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    5. THICKNESS OF THE MACULA, RETINAL NERVE FIBER LAYER, AND GANGLION CELL–INNER PLEXIFORM LAYER IN THE AGE-RELATED MACULAR DEGENERATION: The Repeatability Study of Spectral Domain Optical Coherence Tomography

      THICKNESS OF THE MACULA, RETINAL NERVE FIBER LAYER, AND GANGLION CELL–INNER PLEXIFORM LAYER IN THE AGE-RELATED MACULAR DEGENERATION: The Repeatability Study of Spectral Domain Optical Coherence Tomography

      Purpose: To determine the repeatability of measuring the thickness of the 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 and thirty-four eyes were included. The measurement repeatability was assessed by an experienced examiner who performed two consecutive measurements using a 512 × 128 macular cube scan and a 200 × 200 optic disk cube scan. To assess changes in macular morphology in patients with age-related macular degeneration, the patients were divided into the following three groups according to the central ...

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    6. Prediction of Retinal Ischemia in Branch Retinal Vein Occlusion: Spectral-Domain Optical Coherence Tomography Study

      Prediction of Retinal Ischemia in Branch Retinal Vein Occlusion: Spectral-Domain Optical Coherence Tomography Study

      Purpose : To investigate the relationship between spectral-domain optical coherence tomography (SD-OCT) measurements and retinal nonperfusion in patients with branch retinal vein occlusion (BRVO). Methods : Forty-one patients with BRVO who had recovered from macular edema and had been followed for ≥2 years were included via retrospective, medical record review. Patients were divided into two groups that included 20 nonischemic eyes and 21 ischemic eyes, and 41 fellow control eyes were also included. Using SD-OCT, we measured the thickness of the macular layer, ganglion cell–inner plexiform layer (GC-IPL), and retinal nerve fiber layer (RNFL) in both the BRVO-affected and fellow eyes ...

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    7. Thickness of the Macula, Retinal Nerve Fiber Layer, and Ganglion Cell Layer in the Epiretinal Membrane: The Repeatability Study of Optical Coherence Tomography

      Thickness of the Macula, Retinal Nerve Fiber Layer, and Ganglion Cell Layer in the Epiretinal Membrane: The Repeatability Study of Optical Coherence Tomography

      Purpose : To analyze the repeatability of measurements of the thicknesses of the macula, retinal nerve fiber layer (RNFL), and ganglion cell inner plexiform layer (GCIPL) using spectral-domain optical coherence tomography (SD-OCT) in the epiretinal membrane (ERM). Methods : The prospective study analyzed patients who visited our retinal clinic from June 2013 to January 2014. An experienced examiner measured the thicknesses twice using macular cube 512 × 128 and optic disc cube 200 × 200 scans. The repeatability of the thicknesses of the macula, RNFL, and GCIPL were compared using the intraclass correlation coefficient (ICC) of two groups based on the central macular thickness ...

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    8. Ganglion Cell-Inner Plexiform Layer Thickness in Retinal Diseases: Repeatability Study of Spectral Domain Optical Coherence Tomography

      Ganglion Cell-Inner Plexiform Layer Thickness in Retinal Diseases: Repeatability Study of Spectral Domain Optical Coherence Tomography

      Purpose To analyze the repeatability of measuring the thickness of the ganglion cell inner-plexiform layer using spectral domain optical coherence tomography by auto-segmentation in various retinal diseases. Design Test-retest reliability analysis Methods 180 patients who visited our clinic between April and December 2013 were included. An experienced examiner obtained two consecutive measurements from a macular cube 512 × 128 scan. The patients were divided into three groups according to central macular thickness. Repeatability was determined by comparing the average, minimum, and six sectoral ganglion cell inner-plexiform layer thickness values among groups. Results Data from 165 of the 180 patients were included ...

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    9. Diurnal Variation of Retina Thickness Measured with Time Domain and Spectral Domain Optical Coherence Tomography in Healthy Subjects

      Diurnal Variation of Retina Thickness Measured with Time Domain and Spectral Domain Optical Coherence Tomography in Healthy Subjects

      Purpose. To investigate diurnal variations in macular thickness and total macular volume using time domain optical coherence tomography (TD-OCT) and spectral domain OCT (SD-OCT) in healthy subjects. Methods. Data were derived from 52 eyes of 52 healthy subjects. Macular thickness, macular volume was measured by using TD-OCT and SD-OCT at 8 AM and 6 PM. Results. Comparing TD-OCT measurements, retinal thickness was significantly greater in the afternoon than in the morning in 3 of 9 grid subfields: central macular thickness (CMT) (194 vs. 190 μm; P = 0.006), superior inner area (276 vs. 273 μm; P = 0.010), and temporal ...

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    10. Diurnal Variation of Retina Thickness measured with Time Domain and Spectral Domain Optical Coherence Tomography in Normal Subjects

      Diurnal Variation of Retina Thickness measured with Time Domain and Spectral Domain Optical Coherence Tomography in Normal Subjects
      Purpose: To investigate diurnal variation in macular thickness and total macular volume using time domain optical coherence tomography (TD OCT) and spectral domain OCT (SD OCT) in normal subjects. Methods: Data was derived from 52 eyes from 52 normal subjects. Macular thickness, macular volume were measured by using TD OCT and SD OCT at 8 a.m. and 6 p.m. Results: Comparing TD OCT measurements, retinal thickness was significantly greater in the afternoon than in the morning in 3 of 9 grid subfields: central macular thickness (CMT) (194 vs. 190 um, p=0.006) and the superior and temporal ...
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    11. Spontaneous resolution of foveal cysts associated with X-linked retinoschisis as observed by optical coherence tomography

      Spontaneous resolution of foveal cysts associated with X-linked retinoschisis as observed by optical coherence tomography
      X-linked retinoschisis (XLRS) is an inherited disorder characterized by splitting of the retinal layer. There are no known effective therapeutic interventions for patients with XLRS. In recent years, however, the use of carbonic anhydrase inhibitors and vitrectomy have been reported to be effective in reducing foveal retinoschisis. We encountered a case of XLRS in which spontaneous regression was observed by means of optical coherence tomography (OCT). A 22-year-old male presented with a chief complaint of decreased visual acuity that had been present since childhood. The best-corrected visual acuity (BCVA) was 20/125, and refractive error was 2 D myopia OU ...
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      Mentions: Jung-Yeul Kim
    1-11 of 11
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    Spontaneous resolution of foveal cysts associated with X-linked retinoschisis as observed by optical coherence tomography Diurnal Variation of Retina Thickness measured with Time Domain and Spectral Domain Optical Coherence Tomography in Normal Subjects Diurnal Variation of Retina Thickness Measured with Time Domain and Spectral Domain Optical Coherence Tomography in Healthy Subjects Ganglion Cell-Inner Plexiform Layer Thickness in Retinal Diseases: Repeatability Study of Spectral Domain Optical Coherence Tomography Thickness of the Macula, Retinal Nerve Fiber Layer, and Ganglion Cell Layer in the Epiretinal Membrane: The Repeatability Study of Optical Coherence Tomography Prediction of Retinal Ischemia in Branch Retinal Vein Occlusion: Spectral-Domain Optical Coherence Tomography Study THICKNESS OF THE MACULA, RETINAL NERVE FIBER LAYER, AND GANGLION CELL–INNER PLEXIFORM LAYER IN THE AGE-RELATED MACULAR DEGENERATION: The Repeatability Study of Spectral Domain Optical Coherence Tomography Repeatability of vessel density measurements using optical coherence tomography angiography in retinal diseases Long-term reproducibility of GC-IPL thickness measurements using spectral domain optical coherence tomography in eyes with high myopia Longitudinal Changes of Retinal Thicknesses in Branch Retinal Artery Occlusion: Spectral-Domain Optical Coherence Tomography Study IMAGING TECHNIQUE FROM BECKMAN LAB NAMED TOP 10 MICROSCOPY INNOVATION Optical coherence refraction tomography