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Br J Ophthalmol 88:543-550 doi:10.1136/bjo.2003.026625
  • Clinical science
    • Extended reports

Towards optimal filtering of “standard” multifocal electroretinogram (mfERG) recordings: findings in normal and diabetic subjects

Table 1

Number of diabetic subjects with a greater number of response abnormalities detected by each pre-amplifier filter setting and mfERG measurement

Number of subjects
100>300 Hz* 100<300 Hz
*In this column, the number of abnormal mfERGs in each eye was greater in the 10–100 Hz channel than in the 10–300 Hz channel.
NPDR (n = 17)
Implicit time Stretching method 12 (70.6%) 1 (5.9%)
Sliding method 12 (70.6%) 1 (5.9%)
Amplitude Stretching method 8 (47.1%) 2 (11.8%)
No diabetic retinopathy (n = 12)
Implicit time Stretching method 6 (50.0%) 0 (0.0%)
Sliding method 5 (41.7%) 0 (0.0%)
Amplitude Stretching method 5 (41.7%) 1 (8.3%)

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