Evaluation of pattern-reversal visual evoked potential in patients with neuromyelitis optica
Multiple Sclerosis Journal, 06/12/2012
Neto SP et al. – Evaluation of visual evoked potential (VEP) in patients with definite neuromyelitis optica (NMO) revealed a pattern that is different from that of multiple sclerosis (MS) in 81.6% of eyes examined, characterized by the absence of responses, or decreased amplitude with normal latency.Methods
- Patients with NMO underwent pattern-reversal visual stimulation.
- Nineteen patients were selected for the study.
- Among the 38 eyes examined, 18 (47.4%) had no visual evoked responses and 13 (34.2%) had a reduction of P100 wave amplitude with normal latency.
- Only two (5.3%) had the pattern described in MS and five (13.2%) were normal.