Table 4 Electroretinogram results i.e. values of the amplitudes and the culminating times of a- and b-waves in one control and one affected animal
|  | Amplitude (μV) | Culminating time (msec) | ||
|---|---|---|---|---|
a-wave | b-wave | a-wave | b-wave | |
Rod response | ||||
 Control | – | 429 | – | 52 |
 Affected | – | – | – | – |
Mixed response | ||||
 Control | 80.9 | 274 | 17 | 60 |
 Affected | – | – | – | – |
Cone response | ||||
 Control | 36.7 | 275 | 13 | 24 |
 Affected | 15.6 | 43.6 | 17 | 27 |