01.08.2015 | Erratum
Erratum to: ISCEV Standard for full-field clinical electroretinography (2015 update)
Erschienen in: Documenta Ophthalmologica | Ausgabe 1/2015
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There is an error in Table 1 of the recently published ISCEV Standard for full-field clinical electroretinography (2015 update) [1]. Users of this standard should note that the filter settings for dark-adapted oscillatory potentials (OPs), as correctly specified in the text, require that the high-pass filter should remove frequencies of 75 Hz and below from the ERG waveform; the low-pass filter setting of 300 Hz or above is the same as for other ERG tests. Table 1 is provided below with the correct bandpass for OPs.
ERG test
|
Adaptation/background strength and time
|
Stimulus strength (range)
|
Inter-stimulus time (rate)
|
Recording bandpass (Hz)
|
Main physiological generator(s)
|
||
---|---|---|---|---|---|---|---|
Photopic cd s m−2
|
Scotopic cd s m−2
|
||||||
Dark-adapted 0.01 ERG
|
DA ≥ 20 min
|
0.01 (0.008–0.013)
|
0.025 (0.02–0.03)
|
≥2.0 s (≤0.5 Hz)
|
≤0.3
|
≥300
|
b-wave: rod-initiated on pathways
|
Dark-adapteda 3.0 ERG
|
DA ≥ 20 min
|
3.0 (2.7–3.4)
|
7.5 (6.7–8.4)
|
≥10 s (≤0.1 Hz)
|
≤0.3
|
≥300
|
a-wave: photoreceptors and post-receptoral on pathways
b-wave: on and off bipolar cells
|
Dark-adapteda 10 ERG
|
DA ≥ 20 min
|
10 (8.9–11.2)
|
25 (6.7–8.4)
|
≥20 s (≤0.05 Hz)
|
≤0.3
|
≥300
|
a-wave: photoreceptors and post-receptoral on pathways
b-wave: predominantly rod bipolar cells (on pathways)
|
Dark-adapteda OPs
|
DA ≥ 20 min
|
3.0 (2.7–3.4)
|
7.5 (6.7–8.4)
|
≥10 s (≤0.1 Hz)
|
75b
|
≥300
|
On and off pathways reflecting middle retinal layers and vascular function
|
Light-adapted 3.0 ERG
|
30 cd m−2 ≥ 10 min
|
3.0 (2.7–3.4)
|
7.5 (6.7–8.4)
|
≥0.5 s (≤2.0 Hz)
|
≤0.3
|
≥300
|
a-wave: cones with post-receptoral on and off pathways
b-wave: on and off bipolar cells
|
Light-adapted 30 Hz flicker
|
30 cd m−2 ≥ 10 min
|
3.0 (2.7–3.4)
|
7.5 (6.7–8.4)
|
0.036–0.030 s (28–33 Hz)
|
≤0.3
|
≥300
|
Cone systems with post-receptoral on and off pathways
|