TABLE 1.

Parameters of ERG Responses in the Human Patient With the H258N Allele

	Right eye				Left eye
	Amplitude (μV)		Implicit times (msec)		Amplitude (μV)		Implicit times (msec)
ERG	a-wave	b-wave	a-wave	b-wave	a-wave	b-wave	a-wave	b-wave
Dim white (scotopic)	U	U	U	U	U	U	U	U
Blue (scotopic)	U	U	U	U			U	U
Bright white (scotopic)	160.2	84.6	14.0	34.0	126.3	82.0	14.4	34.8
Single flash white (photopic)	33.8	164.1	15.2	29.6	22.1	100.3	15.6	28.8
Flicker 30 Hz (photopic)		106.9		29.0		86.1		28.0

U, undetectable.