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The analysis of flash visual evoked potential (FVEP) examination in three groups (Fisher exact probability).
| Latency of P1 | Amplitude of P1 | |||||
|---|---|---|---|---|---|---|
| Mild abnormality | Moderate abnormality | Severe abnormality | Mild abnormality | Moderate abnormality | Severe abnormality | |
| MP group (n = 193) | 4 | 1 | 1 | 4 | 2 | 0 |
| SP group (n = 165) | 1 | 2 | 2 | 1 | 3 | 1 |
| DE group (n = 78) | 0 | 1 | 2 | 0 | 1 | 2 |
| P value | 0.358 | 0.181 | ||||
