Table 3 Comparison of Hemifield (HF) ratios of spectral-domain optical coherence tomography (SD-OCT) and pattern electroretinogram (PERG) parameters in normal controls and patients with preperimetric glaucoma (PPG).

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

SD-OCT

 Affected/Unaffected HF RNFL thickness ratio

N/A

0.86 ± 0.12

N/A

 Affected/Unaffected HF GCIPL thickness ratio

N/A

0.92 ± 0.09

N/A

 Thinner/Thicker HF RNFL thickness ratio

0.92 ± 0.06

0.85 ± 0.11

0.002

 Thinner/Thicker HF GCIPL thickness ratio

0.98 ± 0.02

0.91 ± 0.09

 < 0.001

PERG

 Affected/Unaffected HF N95 amplitude ratio

N/A

0.89 ± 0.39

N/A

 Affected/Unaffected HF P50 amplitude ratio

N/A

1.07 ± 0.60

N/A

 Smaller/Larger HF N95 amplitude ratio

0.86 ± 0.12

0.74 ± 0.21

0.007

 Smaller/Larger HF P50 amplitude ratio

0.76 ± 0.16

0.74 ± 0.26

0.697

  1. Affected HF was defined as a localized one-HF with localized RNFL defect or glaucomatous optic disc changes.
  2. Values are mean ± standard deviations.
  3. Bold indicates that the P value reached statistical significance (< 0.05).
  4. HF, hemifield; SD-OCT, spectral-domain optical coherence tomography; PERG, pattern electroretinogram; PPG, preperimetric glaucoma; RNFL, retinal nerve fiber layer; GCIPL, ganglion cell–inner plexiform layer.
Back to article page