Demographics of the study subjects.

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 Demographics of the study subjects.