Table 2 Pattern electroretinogram (PERG) parameters in participants.

From: Hemifield-based analysis of pattern electroretinography in normal subjects and patients with preperimetric glaucoma

Characteristics

Control group (N = 32)

Preperimetric glaucoma group (N = 33)

P-value

PERG N95 Amplitude (μV)

 Full field (FF)

6.62 ± 1.26

5.24 ± 1.62

 < 0.001

 Upper field (UF)

3.30 ± 0.74

2.52 ± 1.01

0.001

 Lower field (LF)

3.53 ± 0.76

2.93 ± 1.02

0.009

PERG P50 Amplitude (μV)

 Full field (FF)

3.65 ± 0.98

2.93 ± 1.25

0.013

 Upper field (UF)

1.87 ± 0.57

1.62 ± 0.76

0.136

 Lower field (LF)

2.00 ± 0.57

1.88 ± 0.81

0.484

PERG N95 Amplitude ratio

 UF/FF

0.51 ± 0.11

0.49 ± 0.14

0.602

 LF/FF

0.54 ± 0.11

0.57 ± 0.14

0.792

 UF/LF

0.95 ± 0.21

0.93 ± 0.46

0.913

 LF/UF

1.10 ± 0.23

1.28 ± 0.65

0.143

PERG P50 Amplitude ratio

 UF/FF

0.55 ± 0.23

0.61 ± 0.32

0.404

 LF/FF

0.60 ± 0.29

0.70 ± 0.34

0.209

 UF/LF

0.99 ± 0.37

0.94 ± 0.43

0.583

 LF/UF

1.18 ± 0.64

1.45 ± 1.24

0.276

  1. Values are mean ± standard deviations.
  2. Bold indicates that the P value reached statistical significance (< 0.05).
  3. PERG, pattern electroretinogram; FF, full field; UF, upper field; LF, lower field.
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