Table 1.
Quantitative ERG results, average of both eyes. Amplitudes and implicit times of rod specific, maximal mixed rod cone responses (max). photopic 30 Hz flicker, and transient photopic tracings.
| Amplitude | Implicit Time | |||
|---|---|---|---|---|
| mV | ms | |||
| a-wave | b-wave | a-wave | b-wave | |
| Rod Specific | ||||
| Case 2 | 236 (124.4*) | 99.5 (96.0**) | ||
| Case 3 | 420 (124.4*) | 84.5 (96.0**) | ||
| Case 4 | 195.5 (124.4*) | 110 (96.0**) | ||
| Max ERG | ||||
| Case 2 | 218.50 (28.3*) | 244.5 (132.1*) | 15 (18.88*) | 50 (57.87*) |
| Case 3 | 299 (28.3*) | 488.5 (132.1*) | 15 (18.88*) | 45.5 (57.87*) |
| Case 4 | 155 (28.3*) | 346.5 (132.1*) | 18 (18.88*) | 73.5 (57.87*) |
| Photopic 30 Hz flicker | ||||
| Case 2 | 108 (74.3*) | 26 (26.0**) | ||
| Case 3 | 140 (74.3*) | 25 (26.0**) | ||
| Case 4 | 91 (74.3*) | 26 (26.0**) | ||
| Transient photopic | ||||
| Case 2 | 50 (26.14*) | 175.5 (81.8*) | 14.5 (13.89*) | 30 (30.63*) |
| Case 3 | 40.5 (26.14*) | 278.5 (81.8*) | 14 (13.89*) | 30 (30.63*) |
| Case 4 | 42 (26.14*) | 155 (81.8*) | 15 (13.89*) | 31.5 (30.63*) |
*
indicates the lower threshold of normal amplitude, defined as two standard deviations below the mean of normal controls.
**
indicates the mean of normal implicit times in controls (10 to 40 years of age).