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Yıl:1993; Cilt: 30; Sayı: 3>> Özet
Nöropsikiyatri Arşivi; 1993;30(3):385-389
Ambliyopların patern vizüel evoked potansiyel (PVEP) ile değerlendirilmesi
MS Öğüt, Ö Us, T Bavbek, C Gürses, M Öğüt
Marmara Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı\r\n
Bu çalışmada, ambliyop hastalarda patern vizuel evoked potansiyellerinin (PVEP) klinik kullanımı araştırıldı. Ambliyoplarda görülen evoked potansiyel değişikliklerinin tiplerini PVEP üzerine değişik görme açılarının etkisini de inceledik. Ambliyopisi olan 30 çocuğa, sırayla oftalmolog ve nörolog tarafından konvansiyonel psikometrik metod (Snellen) ile görme keskinliği ve PVEP testleri yapıldı. PVEP iki vaka dışında tüm vakalarda ambliyop gözü saptamışür. 64 dakikalık görme açısı ile yapılan PVEP kayıtları vakaların yaklaşık yarısında, ambliyop gözü saptamışür. Vakaların diğer yarısında ambliyop göze tanıması için küçük görme açıları kullanılması gerekti. PVEP latans değerleri görme keskinliği ile korelasyon göstermezken, amplitûd değerleri ile görme keskinliği arasında korelasyon saptanmıştır.
Evaluation of Ambliopic children by pattern schift visual evoked potentials (PSVEP)
Clinical usefulness of pattern shift visual potentials (PSVEPs) in amblyopia was evaluated in this study. We also investigated the types of evoked potential changes that could be seen in amblyopia and the effect of different visual angles on PSVEPs in amblyopia. Visual acuity for each eye by conventional psychometric methods (Snellen) and PSVEPs were examined* by an ophthalmolgist and a neurologist respectively in 30 children with amblyopia. PSVEPs correctly identified the amblyopic eye in all cases except two. PSVEPs with 64 minutes check sizes identified the amblyopic eye in approximately half of the cases. In remaining cases, use of smaller check sizes (32 and 16) was needed to identify the amblyopic eye. PVEP amplitude value did show a" correlation with the decrease in visual acuity but the latency did not.

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