1. Hyewon Chung

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    1. Mentioned In 16 Articles

    2. Author Response: Hyperreflective Intraretinal Foci as an OCT Biomarker of Retinal Inflammation in Diabetic Macular Edema

      Author Response: Hyperreflective Intraretinal Foci as an OCT Biomarker of Retinal Inflammation in Diabetic Macular Edema
      We would like to convey our gratitude to Midena et al. 1 for their thoughtful letter to the editor and their insightful comment regarding our article. 2 As shown in a previous study by Vujosevic et al., 3 the reflectivity of hyperreflective foci (HF), as aggregates of retinal microglial cells, might be lower than that of the retinal pigment epithelium (RPE) and could be similar to that of the retinal ...
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    3. Association Between Soluble CD14 in the Aqueous Humor and Hyperreflective Foci on Optical Coherence Tomography in Patients With Diabetic Macular Edema

      Association Between Soluble CD14 in the Aqueous Humor and Hyperreflective Foci on Optical Coherence Tomography in Patients With Diabetic Macular Edema
      Purpose : To investigate the associations between soluble CD14 (sCD14), a cytokine released by microglia and macrophages, and hyperreflective foci (HF) and various characteristics of spectral-domain optical coherence tomography (SD-OCT) in diabetic macular edema (DME). Methods : Sixty-nine eyes from 51 patients with DME and 28 eyes from 28 control subjects were studied. sCD14 levels in the aqueous humor (AH) were measured using ELISA before bevacizumab injection (IVB), and the associations between ...
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    4. QUANTIFICATION OF RETINAL VESSEL TORTUOSITY IN DIABETIC RETINOPATHY USING OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

      QUANTIFICATION OF RETINAL VESSEL TORTUOSITY IN DIABETIC RETINOPATHY USING OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY
      Purpose: To investigate the association of vessel tortuosity with severity of diabetic retinopathy (DR) using optical coherence tomography angiography. Methods: We retrospectively analyzed 30 healthy eyes and 121 eyes of diabetic subjects with no DR, mild nonproliferative DR (NPDR), moderate to severe NPDR and proliferative DR (PDR). Binarized images were used to quantify the vessel tortuosity, vessel density, foveal avascular zone (FAZ) area, and FAZ acircularity. The vessels were divided ...
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    5. New Insights into the Pathoanatomy of Macular Holes Based on Features of Optical Coherence Tomograph

      New Insights into the Pathoanatomy of Macular Holes Based on Features of Optical Coherence Tomograph
      Various important findings related to the development and progression of idiopathic macular holes (MHs) have been described using optical coherence tomography (OCT) since Gass first described the stages of MH development using biomicroscopy in 1988 and 1995. We believe that a system for classifying and staging MHs should reflect the degree of disease status and its progression and have value not only from a practical point of view (by predicting ...
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      Mentions: Hyewon Chung
    6. New Insights into the Pathoanatomy of Macular Holes Based on Features of Optical Coherence Tomography

      New Insights into the Pathoanatomy of Macular Holes Based on Features of Optical Coherence Tomography
      Various important findings related to the development and progression of idiopathic macular holes (MHs) have been described using optical coherence tomography (OCT) since Gass first described the stages of MH development using biomicroscopy in 1988 and 1995. We believe that a system for classifying and staging MHs should reflect the degree of disease status and its progression and have value not only from a practical point of view (by predicting ...
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      Mentions: Hyewon Chung
    7. A Review of the Literature and Multimodal Imaging Findings

      A Review of the Literature and Multimodal Imaging Findings
      Purpose: To review the literature regarding focal choroidal excavation and show its association with pachychoroid features through case examples. Methods: The clinical manifestations of focal choroidal excavation are illustrated with various imaging modalities inclusive of fundus photography, fundus autofluorescence, fluorescein angiography, indocyanine green angiography, spectral domain optical coherence tomography (OCT), enhanced depth imaging OCT, and swept-source OCT. Results: Diffuse or focal areas of choroidal thickening with dilated choroidal vessels (pachyvessels ...
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    8. EN FACE OPTICAL COHERENCE TOMOGRAPHY AND OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF MULTIPLE EVANESCENT WHITE DOT SYNDROME: New Insights Into Pathogenesis

      EN FACE OPTICAL COHERENCE TOMOGRAPHY AND OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY OF MULTIPLE EVANESCENT WHITE DOT SYNDROME: New Insights Into Pathogenesis
      Purpose: To localize the various levels of abnormalities in multiple evanescent white dot syndrome by comparing "en face" optical coherence tomography (OCT) and OCT angiography with various conventional imaging modalities. Methods: In this retrospective case series, multimodal imaging was performed in 9 retinal centers on 36 patients with multiple evanescent white dot syndrome and included widefield fundus autofluorescence (FAF), fluorescein angiography (FA), and indocyanine green angiography, and B-scan and "en ...
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    9. CORRELATION OF OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI WITH VISUAL OUTCOMES IN DIFFERENT PATTERNS OF DIABETIC MACULAR EDEMA

      CORRELATION OF OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI WITH VISUAL OUTCOMES IN DIFFERENT PATTERNS OF DIABETIC MACULAR EDEMA
      Purpose: To investigate the correlation between the hyperreflective foci (HF) on spectral domain optical coherence tomography at the baseline and visual outcomes after intravitreal bevacizumab injections in different patterns of diabetic macular edema. Methods: We retrospectively reviewed the medical records of 97 eyes (80 patients) with diabetic macular edema that were treated with intravitreal bevacizumab injection. The eyes were categorized into three groups by optical coherence tomographic features: diffuse retinal ...
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    10. BASELINE SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI AS A PREDICTOR OF VISUAL OUTCOME AND RECURRENCE FOR CENTRAL SEROUS CHORIORETINOPATHY

      BASELINE SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI AS A PREDICTOR OF VISUAL OUTCOME AND RECURRENCE FOR CENTRAL SEROUS CHORIORETINOPATHY
      Purpose: To investigate the association between baseline retinal microstructures including hyperreflective foci (HF), shown by spectral domain optical coherence tomography, and visual outcome and recurrence after laser photocoagulation for central serous chorioretinopathy. Methods: We retrospectively reviewed 62 eyes from the medical records of 62 central serous chorioretinopathy patients. At the initial visit, baseline visual acuity, presence of photoreceptor granulation, subretinal fluid thickness, choroidal thickness at the macula, and retinal pigment ...
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    11. CORRELATION BETWEEN OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI AND VISUAL OUTCOMES AFTER ANTI-VEGF TREATMENT IN NEOVASCULAR AGE-RELATED MACULAR DEGENERATION AND POLYPOIDAL CHOROIDAL VASCULOPATHY

      CORRELATION BETWEEN OPTICAL COHERENCE TOMOGRAPHIC HYPERREFLECTIVE FOCI AND VISUAL OUTCOMES AFTER ANTI-VEGF TREATMENT IN NEOVASCULAR AGE-RELATED MACULAR DEGENERATION AND POLYPOIDAL CHOROIDAL VASCULOPATHY
      Purpose: To investigate the correlation between hyperreflective foci (HF) on spectral domain optical coherence tomography at baseline and visual outcomes after intravitreal anti-vascular endothelial growth factor injection in neovascular age-related macular degeneration (nAMD) and polypoidal choroidal vasculopathy (PCV). Methods: The authors retrospectively reviewed the medical records of 44 patients with nAMD and 44 patients with PCV. The number of HF was counted according to the location of HF on spectral ...
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    12. Morphologic Changes in Acute Central Serous Chorioretinopathy Using Spectral Domain Optical Coherence Tomography

      Morphologic Changes in Acute Central Serous Chorioretinopathy Using Spectral Domain Optical Coherence Tomography
      ...rous Chorioretinopathy Using Spectral Domain Optical Coherence Tomography Hyung Chan Kim,^ ^Won Bin Cho^ and Hyewon Chung^ Department of Ophthalmology, Konkuk University Medical Center, Konkuk University School of Medic...
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    13. Evaluation of Changes in Choroidal Neovascularization Secondary to Age-related Macular Degeneration after Anti-VEGF Therapy Using Spectral Domain Optical Coherence Tomography

      Evaluation of Changes in Choroidal Neovascularization Secondary to Age-related Macular Degeneration after Anti-VEGF Therapy Using Spectral Domain Optical Coherence Tomography
      Purpose: To evaluate the changes in choroidal neovascularization (CNV) after anti-VEGF therapy for treatment of age-related macular degeneration (AMD) using spectral domain optical coherence tomography (SD OCT). Materials and Methods: This retrospective study included 65 eyes of 65 patients with CNV secondary to AMD. All patients underwent SD OCT before and 4 weeks after three intravitreal injections of bevacizumab (bevacizumab group) or ranibizumab (ranibizumab group). The diameter and thickness of ...
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    14. Correlation of Fundus Autofluorescence with Spectral Domain Optical Coherence Tomography and Vision in Diabetic Macular Edema

      Correlation of Fundus Autofluorescence with Spectral Domain Optical Coherence Tomography and Vision in Diabetic Macular Edema
      ...re DME, in whom photoreceptor integrity before treatment could not be adequately evaluated, even with SD-OCT. Hyewon Chung, MD, PhD, * Byeongjun Park, MD, * Hyun Jin Shin, MD, * Hyung Chan Kim, MD, PhD Affiliations + Cor...
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    15. Correlation of Microperimetry with Fundus Autofluorescence and Spectral-Domain Optical Coherence Tomography in Repaired Macular Holes

      Correlation of Microperimetry with Fundus Autofluorescence and Spectral-Domain Optical Coherence Tomography in Repaired Macular Holes
      Purpose: To investigate the correlation of microperimetry with fundus autofluorescence (FAF), spectral-domain optical coherence tomography (SD-OCT), and visual acuity (VA) in order to better characterize visual outcomes after successful macular hole (MH) surgery.Design: Cross-sectional case series.Methods: Postoperative VA, microperimetry, FAF, and SD-OCT images from 23 eyes of 23 patients who underwent successful MH surgery were obtained. FAF images were examined using the Heidelberg retina angiograph 2, and foveal ...
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  2. About Hyewon Chung

    Hyewon Chung is at the Department of Ophthalmology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea.