Table 4. Characteristics of Schlemm’s Canal.

	Groups
	Normal	POAG	p-value
Meridional diameter (μm)
Right eyes	234.4 ± 30.4	194.5 ± 27.2	<0.001
Superior	235.4 ± 30.4	191.7 ± 32.3	<0.001
Nasal	234.0 ± 37.0	196.7 ± 25.0	0.001
Inferior	236.1 ± 33.4	196.1 ± 20.4	<0.001
Temporal	232.1 ± 34.6	194.2 ± 30.5	<0.001
P-Value a	0.924	0.916
Left eyes	231.6 ± 35.7	196.7 ± 35.2	<0.001
Superior	225.3 ± 33.0	197.1 ± 31.0	0.002
Nasal	230.3 ± 40.7	191.1 ± 34.3	0.001
Inferior	233.4 ± 37.0	196.4 ± 32.6	0.001
Temporal	237.3 ± 32.1	202.0 ± 44.0	0.004
p-value a	0.681	0.816
Average	233.0 ± 34.5	195.6 ± 31.3	<0.001
Coronal diameter (μm)
Right eyes	44.6 ± 8.1	35.1 ± 5.7	<0.001
Superior	44.0 ± 12.9	35.2 ± 6.7	0.006
Nasal	44.0± 13.5	35.6 ± 8.6	0.032
Inferior	44.5 ± 10.9	34.8 ± 6.7	0.001
Temporal	44.8 ± 12.5	36.3 ±11.3	0.004
p-value a	0.960	0.944
Left eyes	44.7± 7.6	35.5 ± 5.9	<0.001
Superior	44.4 ± 12.9	35.7± 7.5	0.014
Nasal	44.5± 11.2	36.3 ± 7.6	0.01
Inferior	43.1 ± 13.3	35.5 ± 6.7	0.03
Temporal	47.0 ± 13.6	36.5 ± 8.8	0.003
p-value a	0.675	0.990
Average	44.5 ± 12.6	35.7 ± 8.0	<0.001

Mann–Whitney U test and Kruskal-Wallis H tests were used to test statistical significance. POAG = primary open angle glaucoma.

^a difference among superior, nasal, inferior and temporal sections.