Table 1

Comparison of b-wave amplitudes and implicit times between normal subjects and those with glaucoma at all flash intensities

Flash intensity (cd/s/m2)b-wave amplitudes (μV)Implicit time (ms)
Normal v glaucomap ValueNormal v glaucomap Value
9.4 556 (99)v 530 (138)NS 43 (5)v 51 (7)<0.001
5.3 (–0.25 log)556 (105) v 522 (144)NS 46 (5) v 51 (8)0.005
3.0 (–0.5 log)567 (75)v 566 (114)NS 44 (9)v 53 (9)0.007
1.7 (–0.75 log)532 (101) v 502 (127)NS 46 (4) v 51 (8)0.001
0.53 (–1.25 log)485 (93)v 444 (123)NS 47 (2)v 55 (12)0.001
0.17 (–1.75 log)443 (98) v 412 (108)NS 53 (6) v 63 (11)<0.001
0.053 (–2.25 log)405 (105)v 389 (131)NS 78 (9)v 83 (11)NS
0.017 (–2.75 log)366 (111) v 337 (123)NS 90 (8) v 97 (12)0.02
0.0053 (–3.25 log)266 (74)v 252 (101)NS106 (13)v 110 (13)NS
0.00053 (–4.25 log) 66 (30) v 60 (30)NS125 (22) v 131 (17)NS
  • Implicit times were significantly longer in the glaucoma group than in the normal group. b-Wave amplitudes did not differ significantly between the two study groups. The p values are the results of the unpaired t test.