Browsing by Author "Türker, I"

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    Septo-Optic Dysplasia: A Case Report
    Bilgin, S; Ilker, SS; Türker, I; Kiliç, S
    An 18-year-old male patient was admitted with loss of vision in the right eye and blurred vision in the left eye. The right eye did not respond to the stimuli in the pattern visual evoked potentials (PVEP) test, and there was a significant delay in the p100 latency in the left eye. Cranial magnetic resonance imaging (MRI) showed a decrease in the calibration of both optical nerves, absence of septum pellucidum, and deformity in both frontal horns of the side ventricles. Despite the rare incidence of Septo-optik displazi (SOD), it should be considered in cases of unilateral or bilateral visual complaints, especially if optical nerve hypoplasia is also present.
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    Evaluation of Subclinical Multiple Sclerosis Patients Using Pattern Visual Evoked Potentials and Visual Field Test
    Bilgin, S; Ilker, SS; Çavdar, E; Türker, I
    Objectives: The aim of this study was to evaluate subclinical multiple sclerosis (MS) patients with normal visual acuity using pattern visual evoked potentials (PVEP) test and central 30-2 threshold visual field (VF) test. Materials and Methods: A total of 60 patients, 30 of which had a definitive MS diagnosis and 30 who were healthy volunteers, were included in the study. The participants were divided into the following three groups: Group 1 -optic neuritis (+) MS patients, Group 2 -optic neuritis (-) MS patients, and Group 3 - control group. Using white on white perimetry, SITA FAST central 30-2 threshold VF tests and 1 degrees-0.3 degrees PVEP measurements were performed. MD, PSD, p100 latency (ms), p100 amplitude (mu V), and central 0-10 degrees, 0-20 degrees, 0-30 degrees, 10-20 degrees, 10-30 degrees, 20-30 degrees retina sensitivities (db) were evaluated in all groups. Results: There was a significant difference in all parameters between Group 1 and Group 3 (p<0.05). There was a significant difference in p100 latency 1 degrees-0.3 degrees, p100 amplitude 0.3 degrees, central 0-30 degrees, 10-30 degrees, 20-30 degrees between Group 2 and Group 3 (p<0.05). There was no significant difference in the parameters except for p100 amplitude 1 degrees between Group 1 and Group 2 (p>0.05). Conclusion: The evaluation of PVEP and central 30 degrees VF can be used to monitor disease prognosis in subclinical MS patients.