Browsing by Author "Subasi, Sevgi"

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    Correlation of Visual Recovery and Increased Ellipsoid Zone Reflectivity After Successful Macular Hole Surgery
    (TURKISH OPHTHALMOLOGICAL SOC, 2020-01-01) Tugan, Busra Yilmaz; Karabas, Levent; Yenihayat, Fatih; Subasi, Sevgi; Kesim, Enes; Ozkan, Berna
    Objectives: To assess changes in reflectivity of the retinal pigment epithelium (RPE), ellipsoid zone (EZ), and external limiting membrane (ELM) on spectral domain-optical coherence tomography (SD-OCT) images and the effects of reflectivity changes on visual acuity improvement after vitrectomy in macular hole patients. Materials and Methods: Twenty-four eyes of 24 patients with idiopathic full-thickness macular hole closed after vitrectomy were retrospectively reviewed. The ``plot profile{''} function of the medical imaging software was used by a single masked physician to analyze RPE, EZ, and ELM reflectivity on OCT images at postoperative 1 month and 12 months. Results: Absolute and relative EZ reflectivity showed highly significant increases at postoperative 12 months compared to 1 month (p<0.001 and p<0.001, respectively). Absolute and relative EZ reflectivity changes from postoperative month 1 to month 12 after macular hole surgery were significantly correlated with best corrected visual acuity improvement (p=0.012 and p=0.020, respectively). Conclusion: EZ reflectivity can be a predictor of functional and anatomical improvement after macular hole surgery.
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    Evaluation of nutritional status in children amblyopia
    (CONSEL BRASIL OFTALMOLOGIA, 2019-01-01) Subasi, Sevgi; Altintas, Ozgul; Mercan, Selda; Cizmecioglu, Filiz; Toprak, Muge; Emre, Esra
    Purpose: We aimed to compare the body mass index and vitamin and mineral status of children with and without amblyopia. Methods: Amblyopic children aged between 5 and 18 years (n=46) and age-matched control children (n=32) were evaluated in terms of anthropometric parameters, including height, weight, body mass index and demographic features. Serum vitamin B-12 and folate were measured using an Advia Centaur XP (Siemens, Ireland) biochemistry analyzer. We evaluated the inorganic mineral elements from hair samples with inductively coupled plasma-mass spectrometry using a Thermo XSeries 2 analyzer (Thermo Fisher Scientific, Bremen, Germany). Results: No significant difference was found between the two groups in terms of height, weight, and body mass index or serum B-12 and folate concentrations (p>0.05). Children with severe amblyopia had lower vitamin B-12 and folate and higher body mass index. The levels of phosphorus (p=0.012), selenium (p=0.002), molybdenum (p<0.001), iodine (p=0.002), chromium (p=0.022), boron (p<0.001), and beryllium (p=0.005) were all significantly lower in the amblyopia group compared to the control group. All of these minerals, except phosphorus, were also significantly lower in those with severe amblyopia compared to those with milder amblyopia and controls (p<0.05). Conclusion: Amblyopic children are significantly deficient in some inorganic elements. Inorganic elements, vitamin B-12 and folate may play an important role in the visual development of amblyopic children.