Publications by authors named "Jae Yon Won"

Background: To compare the visual outcomes of different anti-vascular endothelial growth factor (VEGF) drugs, including aflibercept, ranibizumab, and bevacizumab, in a real-world setting in Korea.

Methods: We collected data from patients who received monotherapy using one of these three anti-VEGF drugs as naïve treatment after being diagnosed with neovascular age-related macular degeneration. The number of injections and visual acuity (VA) outcomes of each cohort were obtained and pairwise comparisons were performed using propensity score matching.

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Central obesity is one of the major risk factors for type 2 diabetes mellitus (DM), and the most common complication of DM is diabetic retinopathy. However, the exact relationship between obesity and DR remains unknown. In this study, we evaluate the effect of obesity on DR by comparing the aqueous humor-derived adipokines.

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As the world undergoes aging, the number of age-related diseases has increased. One of them is disease related to retinal pigment epithelium (RPE) degeneration, such as age-related macular degeneration, causing vision loss without physical damage in the ocular system. It is the leading cause of blindness, with no cure.

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The retinal pigment epithelium (RPE), situated upon Bruch's membrane, plays multiple roles in the ocular system by interacting with photoreceptors and. Therefore, dysfunction of the RPE causes diseases related to vision loss, such as age-related macular degeneration (AMD). Despite AMD being a global cause of blindness, the pathogenesis remains unclear.

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Article Synopsis
  • The study assessed the effectiveness of pars-plana vitrectomy (PPV) with and without autologous platelet concentrate (APC) injection in treating patients with various types of macular holes (MHs).
  • A total of 117 participants were involved, with 59 receiving PPV only and 58 receiving PPV plus APC.
  • Results showed a comparable rate of macular hole closure and similar functional outcomes between the two groups, indicating that APC injection does not enhance surgery results but can be used in select cases without compromising effectiveness.
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Retinal degeneration is a leading cause of incurable vision loss and blindness. The increasing incidence of retinal degeneration has triggered research into the development of in vitro retinal models for drug development and retinal alternatives for transplantation. However, the complex retinal structure and the retinal microenvironment pose serious challenges.

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Retinal pigment epithelium (RPE) is a monolayer of the pigmented cells that lies on the thin extracellular matrix called Bruch's membrane. This monolayer is the main component of the outer blood-retinal barrier (BRB), which plays a multifunctional role. Due to their crucial roles, the damage of this epithelium causes a wide range of diseases related to retinal degeneration including age-related macular degeneration, retinitis pigmentosa, and Stargardt disease.

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The clinical therapy for retinal vascular diseases requires repeated intravitreal injections of drugs owing to their short half-life, which imposes health and economic burdens on patients. Therefore, it is necessary to develop an advanced drug delivery system that can prolong the drug activity and minimize secondary complications. In this study, we developed a core/shell drug-loaded rod (drug rod) to deliver two types of drugs (bevacizumab (BEV) and dexamethasone (DEX)) from a single implant.

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Article Synopsis
  • The study aimed to explore the clinical features and eye-related issues in Korean patients diagnosed with pulmonary sarcoidosis through biopsy.
  • It included 55 patients and assessed factors like uveitis, treatment types, visual acuity, and other health metrics through medical records.
  • Results showed that patients with uveitis had significantly higher treatment rates and that those whose eye issues appeared first required more aggressive treatment compared to those whose lung symptoms were the initial signs.
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  • The study aimed to analyze the demographic and clinical traits of ocular toxoplasmosis (OT) in Korean patients, involving a retrospective review of 46 individuals diagnosed with the condition at a hospital clinic.
  • Among the patients, the average age was 54, with a higher prevalence in females (67.4%), and several had eating history linked to wild boar or deer, while some had close contact with cats.
  • The findings revealed that the main forms of OT involved vitritis and retinochoroiditis, with a large portion of patients showing no complications post-treatment, despite being in a low endemic area for Toxoplasma gondii.
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The aim of the study was to investigate the thickness and volume profiles of each retinal layer in postoperative patients with epiretinal membranes.Twenty-four patients who underwent pars plana vitrectomy with internal limiting membrane (ILM) peeling for epiretinal membrane were included. The best corrected visual acuity, thickness, and volume were recorded from the medical records through a retrospective review.

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The aim of the study was to evaluate the effect of sex and age on the thickness of the retinal layer in normal eyes using spectral-domain optical coherence tomography (SD-OCT).Fifty healthy subjects between the ages of 20 and 80 had their retinal layers measured using SD-OCT at Seoul St. Mary's Hospital.

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Purpose: To evaluate the time, incidence, and visual outcome of vitreoretinal complications after penetrating keratoplasty (PK).

Methods: A retrospective chart review of 1,594 eyes that underwent PK was conducted. Preoperative characteristics, visual significance, and postoperative vitreoretinal complications were analyzed.

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The aim of the study is to compare outcome measures of refractive error obtained using the Plusoptix S09 photorefractor and an autorefractometer of noncycloplegics and cycloplegics in children.We reviewed the medical records of 40 patients (77 eyes) who were classified using 2 methods. The patients were first assigned to 2 groups consisting of 11 eyes with ≥+3.

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Purpose: To assess the long-term efficacy of the most widely used anti-tumor necrosis factor alpha (TNFα) agents for treatment of HLA-B27-positive ankylosing spondylitis (AS)-related uveitis.

Design: Retrospective cohort study.

Methods: The medical records of 143 patients with HLA-B27-positive AS who visited Seoul St.

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Aims: To explore gender differences and associations between metabolic syndrome (MetS) and its components, and diabetic retinopathy (DR) in Korean adults aged 40 years and older with diabetes.

Methods: We analyzed data from the Korean National Health and Nutrition Examination Surveys (2008-2012). In total, 2,576 type 2 diabetic participants, aged 40 and older, were evaluated.

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A 22-year-old man diagnosed with nephropathic cystinosis at the age of 4 years was found to have progressive bilateral corneal crystal deposition. He presented with severe photophobia and decreased visual acuity. Ocular cystinosis was diagnosed on observing the typical crystals.

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