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Pattern electroretinography and visual evoked potentials in optic nerve diseases      
Yazarlar (6)
Atilla Huban
Oya Tekeli
Ankara Üniversitesi, Türkiye
Prof. Dr. Kemal ÖRNEK Prof. Dr. Kemal ÖRNEK
Kırıkkale Üniversitesi, Türkiye
Batıoğlu Figen
Atilla Halil Elhan
Ankara Üniversitesi, Türkiye
Eryılmaz Teksin
Devamını Göster
Özet
Background: To evaluate transient pattern electroretinography (PERG) and pattern visual evoked potential (VEP) for the diagnosis, differential diagnosis and follow-up of optic nerve diseases. Methods: Twenty-nine consecutive patients (14 female, 15 male) with the diagnosis of ischaemic optic neuropathy (n=14) and optic neuritis (n=15) were included in this study. Mean age of the patients with ischaemic optic neuropathy was 63.3 +/- 3.3 (60-78) years and the mean age of the patients with optic neuritis was 28.3 +/- 8.4 (19-43) years. In each patient ophthalmological examination and systemic evaluation were done and VEP and PERG were recorded. As a control group, VEP recordings of 35 healthy subjects were included. Results: In the ischaemic optic neuropathy group (group 1), mean VEP amplitude (+/- SD) (1.96 +/- 0.95 mu V) was found to be decreased significantly in the affected eyes in comparison to the control group and the unaffected eyes. The delay in latency (116.3 +/- 20.14 msec in the affected eyes compared with 101.31 +/- 6.19 msec in unaffected eyes) was statistically significant when compared with the healthy subjects. In the optic neuritis group (group 2), VEP amplitude was decreased (4.13 +/- 4.04 mu V vs 6.97 +/- 3.35 mu V and 6.97 +/- 4.43 mu V) and latency was increased (122.59 +/- 20.09 msec vs 101.31 +/- 6.19 msec and 108.76 +/- 13.57 msec) in affected eyes significantly in comparison to the unaffected eyes and control group, respectively. Even though there were no significant differences for P50 latency and N95/P50 ratios between affected and unaffected eyes in both groups, N95 amplitude decreased significantly in the affected eyes of the ischaemic optic neuropathy patients and N95 latency was found to be decreased in optic neuritis patients. There was no correlation between VEP and PERG findings in both groups. Conclusion: VEP amplitude decreased significantly in ischaemic optic neuropathies while latency delay was more significant in patients with optic neuritis. PERG findings showed decreased N95 amplitude in ischemic optic neuropathy without associated latency changes. (C) 2005 Elsevier Ltd. All rights reserved.
Anahtar Kelimeler
optic neuritis | ischaemic optic neuropathy | visual evoked potential | pattern electroretinography
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF CLINICAL NEUROSCIENCE
Dergi ISSN 0967-5868 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 01-2006
Cilt No 13
Sayı 1
Sayfalar 55 / 59
Doi Numarası 10.1016/j.jocn.2005.02.007