Table 1.

Demographic characteristics of the study population

Variables	Control	POAG	SOAG	XFG	P-value
Patients (n)	20	20	19	19
Number of eyes (n)	20	20	19	19
Gender (male: female)	5:15	13:7	13:6	12:7	0.0204*
Age (years)
Mean ± SD	73.5 ± 7.1	71.2 ± 10.2	61.2 ± 14.8	75.6 ± 12.8	< .005†, ††††
[range]	58–87	52–87	39–87	39–93
IOP (mmHg)
Mean ± SD	13.6 ± 1.7	15.7 ± 4.0	22.4 ± 11.9	29.7 ± 9.3† < .001,	< .0001**†, †††
[range]	10–16	8–25	7–52	13–48

POAG primary open angle glaucoma, SOAG secondary open angle glaucoma, XFG exfoliation glaucoma, IOP intraocular pressure, ATX autotaxin, TGFβ transforming growth factor beta

^*Fisher's exact test; **Kruskall-Wallis test

^†Statistically significant difference between control and SOAG (Steel–Dwass test)

^††Statistically significant difference between control and XFG (Steel–Dwass test)

^†††Statistically significant difference between POAG and XFG (Steel–Dwass test)

^††††Statistically significant difference between SOAG and XFG (Steel–Dwass test)