Table 2

ERG implicit times (ms) (delayed implicit times are underlined)

VariableMedian Upper limitRight eyeLeft eye
1996199719961997
Single cone32.034.834.0nd32.030.8
Cone flicker29.331.5 32.0 nm28.028.0
ON response32.036.0 38.0 50.0 33.034.0
OFF response22.024.0 26.0 42.0 23.024.0
  • nd=not determinable, because no distinct b-wave peak was present.

  • nm=not measurable owing to missing response.