Table 2 Comparison of RNFL thickness and OCT-A metrics among PACG, NTG, and Controls.

From: Comparison of optical coherence tomography angiography metrics in primary angle-closure glaucoma and normal-tension glaucoma

Variables

PACG

NTG

Controls

P value

PACG vs NTG

PACG vs Controls

NTG vs Controls

RNFL thickness (μm)

Average

88.00 ± 1.89

83.34 ± 1.62

102.45 ± 1.44

0.061

 < 0.001

 < 0.001

Superotemporal

120.93 ± 3.33

111.67 ± 2.97

140.79 ± 3.03

0.038

 < 0.001

 < 0.001

Temporal

69.48 ± 1.70

73.41 ± 1.82

86.31 ± 3.21

0.116

 < 0.001

 < 0.001

Inferotemporal

121.09 ± 3.98

112.99 ± 4.24

146.79 ± 4.32

0.163

 < 0.001

 < 0.001

Inferonasal

97.82 ± 2.99

92.48 ± 2.50

115.27 ± 3.08

0.171

 < 0.001

 < 0.001

Nasal

62.97 ± 1.90

59.92 ± 2.18

70.92 ± 2.72

0.287

0.033

0.004

Superonasal

98.21 ± 3.29

84.73 ± 3.28

111.24 ± 3.59

0.007

0.007

 < 0.001

cpVD (%)

Global

55.389 ± 0.721

52.369 ± 0.781

57.700 ± 0.599

0.009

0.014

 < 0.001

Superotemporal

57.094 ± 1.106

53.410 ± 1.047

58.686 ± 0.828

0.031

0.249

 < 0.001

Temporal

56.939 ± 0.977

56.920 ± 0.924

59.956 ± 0.755

0.989

0.033

0.033

Inferotemporal

58.458 ± 0.909

53.971 ± 1.129

60.817 ± 0.951

0.004

0.073

 < 0.001

Inferonasal

54.946 ± 1.027

48.789 ± 1.130

56.658 ± 1.005

 < 0.001

0.234

 < 0.001

Nasal

51.643 ± 0.896

50.483 ± 1.130

54.547 ± 0.786

0.421

0.030

0.009

Superonasal

53.365 ± 0.903

50.457 ± 1.169

55.309 ± 0.768

0.098

0.101

0.002

cpFD

1.519 ± 0.004

1.516 ± 0.004

1.548 ± 0.003

0.523

 < 0.001

 < 0.001

  1. Significant values are in bold.
  2. Statistical significance was tested by generalized estimating equation with Sequential Bonferroni post-hoc test.
  3. cpRNFL = circumpapillary retinal nerve fiber layer; cpVD = circumpapillary vessel density; cpFD = circumpapillary fractal dimension; PACG = primary angle closure glaucoma; NTG = normal tension glaucoma.
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