1. Articles from Oh Woong Kwon

    1-6 of 6
    1. Novel Findings of Polypoidal Choroidal Vasculopathy via Optical Coherence Tomography Angiography

      Novel Findings of Polypoidal Choroidal Vasculopathy via Optical Coherence Tomography Angiography

      Purpose To introduce novel findings of polypoidal choroidal vasculopathy (PCV) via optical coherence tomography angiography (OCTA) Methods This study is a retrospective chart review of 16 patients (16 eyes) with PCV. OCTA (Avanti RTVue XR) findings were evaluated and selected for analysis after agreement by two retina specialists . Results Twenty one polyps in 16 eyes (16 patients) with PCV were included in this study. The mean patient age was 67 years (13 men and three women). The shape of polypoidal lesions on OCTA at initial were halo (five polyps), rosette (seven polyps), and vascular network (nine polyps). Eight months after ...

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    2. Optical coherence tomography angiography in patients with polypoidal choroidal vasculopathy

      Optical coherence tomography angiography in patients with polypoidal choroidal vasculopathy

      Purpose To report the characteristics of polypoidal choroidal vasculopathy (PCV) based on optical coherence tomography angiography (OCTA) results. Method A retrospective, cross-sectional case series was conducted. Patients treated for PCV were evaluated with the OCTA system. The OCTA images of these patients were compared with those from indocyanine green angiography (ICGA). All eyes of consecutive patients with PCV were included. Results The mean age of the patients (five men and two women) was 67.86 ± 14.02 years. The mean number of anti-vascular endothelial growth factor injections was 10.43 ± 10.01. OCTA demonstrated branched vascular networks, which were detected ...

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    3. Optical coherence tomography-guided selective focal laser photocoagulation: a novel laser protocol for diabetic macular edema

      Optical coherence tomography-guided selective focal laser photocoagulation: a novel laser protocol for diabetic macular edema

      Background To compare the anatomic and functional results between optical coherence tomography (OCT)-guided selective focal laser photocoagulation (OCT–laser) and conventional modified Early Treatment Diabetic Retinopathy Study (mETDRS) laser treatment for diabetic macular edema (DME). Methods We analyzed treatment outcomes in 47 consecutive eyes treated with OCT–laser compared to 31 matched eyes treated with mETDRS. In the OCT–laser group, we identified ‘significant actively-leaking microaneurysms on OCT’ (SALMO) which are responsible for edema in OCT B-scan images, and thoroughly ablated them with photocoagulation. Best-corrected visual acuity (BCVA) and retinal thickness by OCT were compared at baseline and 12 ...

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    4. NEW INSIGHTS INTO THE PATHOANATOMY OF DIABETIC MACULAR EDEMA: Angiographic Patterns and Optical Coherence Tomography

      NEW INSIGHTS INTO THE PATHOANATOMY OF DIABETIC MACULAR EDEMA: Angiographic Patterns and Optical Coherence Tomography

      Purpose: To describe the pathoanatomy of diabetic macular edema in optical coherence tomography and its correlation with fluorescein angiography patterns. Methods: Sixty eyes of 56 patients were analyzed. Diabetic macular edema was classified into typical focal leakage (from microaneurysm), typical diffuse leakage (the capillary plexus), or combined/questionable leakage using fluorescein angiography and retinal thickness profiles. The leakage and pooling patterns in fluorescein angiography were matched to the corresponding optical coherence tomography images and analyzed. Results: Focal leakage shows swelling predominantly in the outer plexiform layer (OPL). Deeply located microaneurysms directly leak into the loose fiber portion of OPL (Henle ...

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    5. Features of Optical Coherence Tomography Are Predictive of Visual Outcomes after Intravitreal Bevacizumab Injection for Diabetic Macular Edema

      Features of Optical Coherence Tomography Are Predictive of Visual Outcomes after Intravitreal Bevacizumab Injection for Diabetic Macular Edema
      Purpose: To identify optical coherence tomography (OCT) patterns of diabetic macular edema (DME) predictive of visual outcomes after intravitreal bevacizumab (IVB; Avastin®) injection. Methods: We retrospectively examined 56 consecutive eyes that were given IVB injections for DME alongside the preoperative macular OCT data. Using this information, we categorized the eyes into 2 groups: group 1 showing diffuse patterns; group 2 demonstrating cystoid macular edema (CME). Result: The mean follow-up period was 11.66 ± 3.98 months. Group 1 eyes gained 0.04 ± 9.27 ETDRS letters (p = 0.984), while group 2 eyes gained 5.79 ± 9.98 ETDRS letters ...
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    6. Foveal Ganglion Cell Layer Damage in Ischemic Diabetic Maculopathy: Correlation of Optical Coherence Tomographic and Anatomic Changes

      Purpose: To describe the morphologic features of ischemic diabetic maculopathy by high-resolution optical coherence tomography (OCT) and their correlation with the damaged foveal avascular zone (FAZ) on fluorescein angiography (FA).Design: Observational case series.Participants: One hundred twenty-four eyes of 63 patients with diabetic retinopathy and acceptable FA and OCT images were studied. Twenty-three normal fellow eyes of 23 nondiabetic patients with unilateral acute central serous choroidopathy also were studied.Methods: High-speed Fourier-domain OCT was used with a speckle noise-reduction technique to obtain detailed horizontal and vertical images through the center of the fovea and horizontal raster scans every 100 ...
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    1-6 of 6
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    1. (3 articles) Yonsei University
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    Features of Optical Coherence Tomography Are Predictive of Visual Outcomes after Intravitreal Bevacizumab Injection for Diabetic Macular Edema NEW INSIGHTS INTO THE PATHOANATOMY OF DIABETIC MACULAR EDEMA: Angiographic Patterns and Optical Coherence Tomography Optical coherence tomography-guided selective focal laser photocoagulation: a novel laser protocol for diabetic macular edema Optical coherence tomography angiography in patients with polypoidal choroidal vasculopathy Novel Findings of Polypoidal Choroidal Vasculopathy via Optical Coherence Tomography Angiography A PhD position is available in OPIRA laboratory at the Biomedical Engineering Department of the University of Illinois in Chicago A PhD position is available in OPIRA laboratory at the Biomedical Engineering Department of the University of Illinois in Chicago Artifact Rates for 2D Retinal Nerve Fiber Layer Thickness Versus 3D Neuroretinal Rim Thickness Using Spectral-Domain Optical Coherence Tomography Development of Deep Learning Models to Predict Best-Corrected Visual Acuity from Optical Coherence Tomography Machine learning helps improve diagnostic ability of subclinical keratoconus using Scheimpflug and OCT imaging modalities Applications and Future Directions for Optical Coherence Tomography in Dermatology Anterior Segment Inflammation in Pediatric Uveitis Is Associated with Reduced Retinal Vascular Density as Quantified by Optical Coherence Tomography Angiography