ERG standard protocol parameters (mean(SEM))
| Control (n=23) | Goggle (n=23) | 95% Confidence interval for difference | P value | |
|---|---|---|---|---|
| Rod response (blue) 1 | ||||
| Amplitude (μV) | 11.0 (1.1) | 8.6 (0.8) | −0.4 to 5.2 | 0.10 |
| IT (msec) | 93.0 (3.7) | 93.4 (3.8) | −11.0 to 10.2 | 0.94 |
| Maximal mixed rod/cone response (white) 2 | ||||
| Amplitude (μV) | 35.8 (3.6) | 32.4 (3.3) | −6.4 to 13.3 | 0.49 |
| Cone response (30 Hz flicker) 3 | ||||
| Amplitude (μV) | 3.77 (0.54) | 3.97 (0.57) | −1.8 to 1.4 | 0.80 |
| IT (msec) | 39.7 (0.8) | 41.6 (1.0) | −4.4 to 0.7 | 0.15 |
| Light-adapted cone response (white + background) 3-4 | ||||
| Amplitude (μV) | 25.4 (2.2) | 23.2 (2.3) | −4.4 to 8.7 | 0.51 |
| IT (msec) | 45.3 (1.4) | 45.9 (1.5) | −4.7 to 3.6 | 0.80 |
3-1 0.7 log scotopic troland-sec (setting 1; Wratten 47A filter).
3-2 2.0 log photopic troland-sec (setting 16; no filter).
3-3 1.3 log photopic troland-sec (setting 4; no filter).
↵3-4 2.0 log photopic troland-sec (setting 16; no filter; 3.0 log photopic background).