Yazar "Ceylan, O. M." seçeneğine göre listele

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    Frequency of Refraction Errors among School-age Children in Ankara, Turkey: A Cross-Sectional Study
    (Medcom Ltd, 2017) Aydogan, U.; Ceylan, O. M.; Nerkiz, P.; Doganer, Y. C.; Tombus, O. T.; Gokce, G.; Thurston, M.
    Uncorrected refractive errors are the most frequent cause of visual impairment in school-age children. The present study sought to evaluate frequency of refraction disorders in school-age children at different socio-cultural levels in Ankara/Turkey. This cross-sectional study was carried out on 1729 children 7-14 years of age. Frequency of refractive errors were determined as 10.8% (n=186) myopia, 3.8% (n=66) hyperopia and 26.3% (n=455) astigmatism. Multiple regression analysis revealed that age (OR: 1.23, p<0.001), positive family history of myopia (OR: 2.36, p<0.001), number of siblings (OR: 0.73, p=0.001) and maternal working status (OR: 0.32, p=0.002) were significantly associated with myopia in children. Frequency of myopia as a cause of refractive errors was increased compared with the other developed countries. Regular eye screening programs in school-aged children should be essential practices to prevent vision loss.
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    Ocular findings in patients with attention deficit and hyperactivity
    (Springer, 2020) Atas, P. B. Ulucan; Ceylan, O. M.; Donmez, Y. E.; Ozcan, O. Ozel
    Aim To evaluate ocular findings, contrast sensitivity, color perception, and macular and retinal nerve fiber layer (RNFL) thickness in patients with attention-deficit/hyperactivity disorder (ADHD). Materials and methods This prospective study included a group of 37 patients aged 6-16 years diagnosed with combined ADHD and a healthy control group of 37 children. The participants underwent an ophthalmological examination. Color vision testing was administered using the Ishihara plates test. Contrast sensitivity test was performed using the Functional Acuity Contrast Test. Macular thickness and RNFL thickness were measured by spectral-domain optical coherence tomography. Results No significant difference was found between the patient and control groups with regard to ocular findings, color vision, and convergence insufficiency (p > 0.05). Contrast sensitivity level was significantly lower at four out of five spatial frequencies (1.5, 3, 12, and 18 cpd) in the patient group compared to the control group. The RNFL thickness in nasal quadrant and macular thickness was significantly higher in the healthy control group compared to the ADHD group. Conclusion Contrast sensitivity levels and the nasal quadrant RNFL thickness were significantly lower in the patient group compared to the control group. Based on the findings of the study, we suggest that the level of contrast in the tools used by ADHD patients in daily life settings should be enhanced.