Table 1. Demographics of the study subjects.

	N	G	P *	Glaucoma
	(n = 134)	(n = 91)		EG	P †	AG	P ‡
				(n = 66)		(n = 25)
Age (y.o)	56.70±15.91	63.59±15.20	0.001	62.55±16.50	0.017	66.36±10.85	0.004
SE (D)	−1.27±3.13	−1.60±3.27	0.456	−1.10±2.79	0.713	−2.91±4.06	0.019
MD (dB)	−0.74±1.34	−5.05±5.78	<0.001	−2.43±1.34	<0.001	−11.98±7.32	<0.001
PSD (dB)	1.79±0.88	5.71±4.35	<0.001	3.71±2.40	<0.001	10.97±3.97	<0.001

The data are expressed as the means ± SD.

N: non-glaucomatous group

G: glaucomatous group

EG: early stage glaucoma group (MD <-5dB)

AG: advanced stage glaucoma group (MD ≥-5dB)

SE: spherical equivalent

MD: mean deviation

PSD: pattern standard deviation

* Difference between the normal group and all glaucoma cases

† Difference between the normal group and the early glaucoma group

‡ Difference between the normal group and the progressive/advanced glaucoma group