Table 3.

Flicker ERG amplitudes and peak times in 28 term-born neonates

Stimulus Strength	Amplitude (µV)	Peak Time (ms)
(n ERGs*)	Mean (SD)	Mean (SD)
	Median [IQR]	Median [IQR]
3 cd·s/m2	1.0 (0.5)	46.2 (4.5)
(n = 20)	0.9 [0.6 – 1.3]	45.8 [43.1 – 50.0]
6 cd·s/m2	1.0 (0.7)	44.9 (4.3)
(n = 25)	0.8 [0.6 – 1.1]	45.0 [42.0 – 46.5]
12 cd·s/m2	1.9 (1.3)	42.4 (4.2)
(n = 27)	1.5 [1.1 – 2.4]	42.5 [37.9 – 46.1]
30 cd·s/m2	2.9 (2.0)	43.1 (3.5)
(n = 28)	2.1 [1.7 – 3.5]	43.5 [41.7 – 45.6]
50 cd·s/m2	3.7 (2.3)	43.2 (5.1)
(n = 28)	2.8 [2.2 – 5.0]	[40.1 – 46.1]

^*The number of neonates in whom reproducible flicker ERGs were successfully recorded is given for each stimulus strength. Only one eye was tested for each neonate

IQR, interquartile range; SD, standard deviation