Table 2.
ERG Photoreceptor and Postreceptor Parameters in cCSNB Patients, iCSNB Patients, and All Control Subjects
|
Parameter |
cCSNB |
iCSNB |
Control |
Statistics |
||||||
|
Mean |
SD |
n |
Mean |
SD |
n |
Mean |
SD |
n |
||
| Scotopic | ANOVA | |||||||||
| Log SROD (scot td−1)s−3 | 1.91 | 0.07 | 21 | 1.93 | 0.62 | 14 | 1.95 | 0.07 | 58 | F = 2.331; df = 2, 90; ns |
| RROD, μV | 253.96 | 59.60 | 21 | 225.62 | 73.55 | 14 | 382.34 | 70.78 | 58 | F = 45.618; df = 2, 90; P < 0.01 |
| Log σ | 1.14 | 0.51 | 21 | 0.13 | 0.48 | 14 | −0.80 | 0.12 | 61 | F = 313.773; df = 2, 93; P < 0.01 |
| VMAX, μV | 91.71 | 40.56 | 21 | 88.28 | 31.86 | 14 | 410.02 | 78.33 | 61 | F = 255.099; df = 2, 93; P < 0.01 |
| Photopic | ANOVA | |||||||||
| Log SCONE (phot td−1)s−3 | 1.44 | 0.15 | 17 | 1.51 | 0.10 | 12 | 1.52 | 0.11 | 25 | F = 2.474; df = 2, 51; ns |
| RCONE, μV | 49.53 | 24.09 | 17 | 32.28 | 14.15 | 12 | 77.48 | 22.03 | 25 | F = 20.520; df = 2, 51; P < 0.01 |
| 30-Hz flicker | ||||||||||
| Amplitude, μV | 77.23 | 19.50 | 20 | 17.83 | 10.62 | 11 | 119.80 | 43.05 | 35 | F = 40.438; df = 2, 63; P < 0.01 |
| Time to peak, ms | 33.65 | 3.77 | 20 | 35.40 | 3.89 | 11 | 28.25 | 2.03 | 35 | F = 34.619; df = 2, 63; P < 0.01 |
| Long flash d-wave | Mann-Whitney U | |||||||||
| Amplitude, μV | 64.75 | 30.88 | 9 | 35.49 | 10.49 | 22 | ns | |||
| Implicit time, ms | 176.72 | 2.72 | 9 | 171.98 | 1.29 | 22 | U = 21; P < 0.01 | |||
ns, nonsignificant.