Analysis of Peripapillary Retinal Vessel Diameter in Unilateral Normal-Tension Glaucoma
Table 1
Comparison of variables among glaucomatous eyes, fellow eyes, and control eyes.
Unilateral NTG
Unilateral NTG
Control eye (3)
value
Post hocc
Affected eye (1)
Fellow eye (2)
1 versus 2
2 versus 3
1 versus 3
Sex (M : F)
17 : 20
18 : 22
0.995a
Age (yrs)
55.8 ± 10.7
57.0 ± 9.1
0.837b
IOP (mmHg)
15.1 ± 2.6
14.6 ± 2.7
15.4 ± 3.7
0.532b
Central corneal thickness (μm)
528.7 ± 29.5
529.6 ± 29.1
540.1 ± 37.6
0.591b
Spherical equivalent (diopter)
−1.0 ± 1.8
−0.9 ± 2.0
−0.3 ± 1.6
0.229b
MD
−4.7 ± 4.3
−1.3 ± 1.6
−0.5 ± 1.1
<0.001b
<0.001
0.365
<0.001
PSD
6.2 ± 3.8
2.0 ± 0.8
1.7 ± 0.3
<0.001b
<0.001
0.847
<0.001
Total RNFL thickness (μm)
88.6 ± 12.9
100.5 ± 8.2
102.1 ± 11.4
<0.001b
<0.001
0.810
<0.001
Superior (μm)
102.9 ± 19.6
118.6 ± 11.1
118.8 ± 15.0
<0.001b
<0.001
0.997
<0.001
Temporal (μm)
70.2 ± 14.2
77.8 ± 9.3
77.2 ± 12.9
0.015b
0.026
0.975
0.040
Inferior (μm)
103.8 ± 21.6
125.8 ± 13.7
127.4 ± 15.6
<0.001b
<0.001
0.908
<0.001
Nasal (μm)
77.6 ± 16.0
80.4 ± 14.3
85.3 ± 16.1
0.088b
CRAE (μm)
154.6 ± 15.8
161.2 ± 18.7
181.7 ± 10.5
<0.001b
0.154
<0.001
<0.001
CRVE (μm)
200.8 ± 22.8
205.0 ± 22.6
228.2 ± 13.2
<0.001b
0.635
<0.001
<0.001
AVR
0.77 ± 0.06
0.78 ± 0.06
0.80 ± 0.05
0.198b
Total (n)
37
37
40
Data are presented as mean ± standard deviation. NTG: normal-tension glaucoma; IOP: intraocular pressure; MD: mean deviation; PSD: pattern standard deviation; RNFL: retinal nerve fiber layer; CRAE: central retinal arteriole equivalent; CRVE: central retinal venule equivalent; AVR: arteriovenous ratio. aPearson’s chi-square test. bAnalysis of variance (ANOVA) test. cPost hoc Tukey’s test.
