Abstract

Objective: Aim of this study was to investigate the possible relationship between serum vitamin B12 levels and P100 latency and amplitudes with visual evoked potentials (VEP) in patients with B12 vitamin deficiency without optic neuritis (ON).

Material and Methods: Patients who presented to the outpatient neurology clinic of Çanakkale Onsekiz Mart University Research Hospital underwent initial evaluation. Among those, complete blood count, full biochemistry (blood glucose, liver and kidney function tests, electrolites) and thyroid function tests were performed to the patients with serum B12 vitamin levels 0.05).

Conclusion: Our results reveals that there is no correlation between the VEP values and the severity of vitamin B12 deficiency in the absence of ON in patients with vitamin B12 deficiency. Study still continues, but results of the preliminary study are shared in order to discuss the value of VEP in patients with vitamin B12 deficiency without ON.

Key Words: Vitamin B12 Deficiency; Optic Nerve; Visual Evoked Potentials.