GCC thickness (µm)

Eyes with preperimetric glaucoma (mean ± SD)

Healthy eyes (mean ± SD)

P values

GCC Ave

89.58 ± 9.02

97.82 ± 5.06

<0.001

GCC Sup

89.22 ± 10.33

97.31 ± 5.92

<0.001

GCC Inf

89.78 ± 8.76

98.34 ± 5.38

<0.001

FLV

2.55 ± 3.71

0.49 ± 0.68

<0.001

GLV

9.93 ± 7.03

3.40 ± 2.55

<0.001