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Table 2 Comparison of cpRNFL thickness, GCIPL thickness and asymmetry measurements, and ONH parameters between two groups

From: Diagnostic ability of macular ganglion cell asymmetry in Preperimetric Glaucoma

Parametres

Normal

(n = 67)

PPG

(n = 67)

P value

cpRNFL Thickness

 Average

96.0 ± 9.2

86.8 ± 8.7

< 0.001

 Superior

115.1 ± 16.4

104.2 ± 15.3

< 0.001

 Nasal

65.1 ± 10.2

64.4 ± 12.2

0.712

 Inferior

119.8 ± 17.1

105.9 ± 16.1

< 0.001

 Temporal

83.0 ± 14.6

73.7 ± 12.7

< 0.001

GCIPL Thickness

 Average

80.6 ± 5.9

76.2 ± 6.6

< 0.001

 Minimum

77.9 ± 6.7

71.8 ± 9.0

< 0.001

 Superonasal

82.8 ± 6.7

80.0 ± 9.0

0.043

 Superior

81.1 ± 6.6

77.4 ± 7.8

0.004

 Superotemporal

80.1 ± 5.4

75.5 ± 7.2

< 0.001

 Inferotemporal

80.8 ± 5.6

73.5 ± 7.5

< 0.001

 Inferior

77.8 ± 6.6

72.7 ± 7.4

< 0.001

 Inferonasal

80.9 ± 7.0

78.0 ± 7.8

0.024

GCIPL Absolute Difference

 I–S

6.1 ± 4.2

12.3 ± 13.6

0.001

 IT–ST

2.5 ± 1.7

5.2 ± 5.5

< 0.001

 T–N

6.9 ± 4.5

11.9 ± 8.9

< 0.001

 IT–SN

3.7 ± 2.4

8.2 ± 7.2

< 0.001

 IT–IN

3.3 ± 2.8

6.5 ± 5.6

< 0.001

 ST–IN

3.7 ± 3.4

5.0 ± 4.4

0.048

GCIPL Asymmetry Ratio

 I/S

0.98 ± 0.03

0.97 ± 0.08

0.109

 IT/ST

1.01 ± 0.04

0.98 ± 0.10

0.019

 T/N

0.98 ± 0.05

0.95 ± 0.08

0.002

 IT/SN

0.98 ± 0.05

0.93 ± 0.11

0.001

 IT/IN

1.00 ± 0.06

0.95 ± 0.09

< 0.001

 ST/IN

0.98 ± 0.07

0.97 ± 0.09

0.118

GCIPL Asymmetry Index

 Log10 (I/S)

0.01 ± 0.01

0.02 ± 0.03

0.001

 Log10 (IT/ST)

0.01 ± 0.01

0.03 ± 0.03

< 0.001

 Log10 (T/N)

0.02 ± 0.01

0.03 ± 0.03

< 0.001

 Log10 (IT/SN)

0.02 ± 0.01

0.05 ± 0.04

< 0.001

 Log10 (IT/IN)

0.00 ± 0.02

0.04 ± 0.03

< 0.001

 Log10 (ST/IN)

0.02 ± 0.02

0.03 ± 0.03

0.026

ONH

 Rim Area

1.21 ± 0.23

1.05 ± 0.19

< 0.001

 Disc Area

1.78 ± 0.50

1.98 ± 0.50

< 0.001

 Average C/D

0.50 ± 0.20

0.63 ± 0.18

< 0.001

 Vertical C/D

0.47 ± 0.20

0.60 ± 0.18

< 0.001

 Cup Volume

0.18 ± 0.15

0.36 ± 0.26

< 0.001

  1. PPG, preperimetric glaucoma; GCIPL, ganglion cell-inner plexiform layer; cpRNFL, circumferential peripapillary retinal nerve fiber layer; ONH, optic nerve head; C/D, cup-to-disc ratio; I, inferior hemisphere; S, superior hemisphere; IT, inferotemporal; ST, superotemporal; T, temporal; N, nasal; SN, superonasal; IN, inferonasal