Table 2.

Median of the PCA and MTA scores (±SD, standard deviation) as well as the mean (±SD) of SA of the ONs with and without sheath

	POAG	CONTROL	p-value
Median PCA score	1 ± 0.75	0 ± 0.67	0.026
Median MTA score	0 ± 0.59	0 ± 0.48	0.58
SA of ON without sheath (average)	5.12 ± 1.60	5.73 ± 1.40	0.046
SA of ON with sheath	20.86 ± 4.52	19.43 ± 3.98	0.096

MTA, medial temporal atrophy; ON, optic nerve; PCA, posterior cortical atrophy; POAG, primary open-angle glaucoma; SA, surface area; SD, standard deviation.