Table 3. Proportion of Eyes with Primary Open Angle Glaucoma That Had an Observable Schlemm’s Canal.

	Observable Schlemm’s Canal
		POAG
	Normal	IOP>21mmHg	IOP<21mmHg	p-value a	p-value b	p-value c
Right eyes, n (%)	65/80 (81.3)	49/96 (51.0)	39/64 (60.9)	<0.001	0.007	0.218
Left eyes, n (%)	65/80 (81.3)	44/88 (50.0)	38/72(52.8)	<0.001	<0.001	0.727
Total, n (%)	130/160 (81.3)	93/184 (50.5)	77/136 (56.62)	<0.001	<0.001	0.282
p-value d	1.000	0.888	0.338

All statistical comparisons were performed using a chi-square test. POAG = primary open angle glaucoma, IOP = intraocular pressure.

^a comparison between Normal and POAG (IOP > 21 mmHg) groups.

^b comparison between Normal and POAG (IOP < 21 mmHg) groups.

^c comparison between POAG groups.

^d comparison between right eyes and left eyes.