Mean (SD) of P100 latencies (ms) from the affected and fellow eyes in 15 patients without clinical or VEP evidence of fellow eye involvement
| Affected eye | Fellow eye | Difference | |
| Central macula | 126.8 (10.5) | 98.2 (5.1) | 28.6 (11.0) |
| Nasal macula | 110.8 (13.1) | 93.2 (5.2) | 17.6 (14.1) |
| Temporal macula | 106.6 (8.7) | 95.6 (6.2) | 11.0 (8.2) |
| Centralv nasal | p<0.05 | ||
| Centralv temporal | p<0.01 | ||
| Nasalv temporal | NS |