Optic canal: a CT-based morphometric study in north Indian population

Egyptian Journal of Neurosurgery

Table 2 Comparative age-related morphometry in males and females

Optic canal		Parameters in Males (mm)				Parameters in Females (mm)
		Mean	SD	95% Confidence		Mean	SD	95% Confidence
		Mean	SD	Lower	Upper	Mean	SD	Lower	Upper
Width of cranial opening	1–20 year	4.24	0.77	3.85	4.62	4.12	0.48	3.93	4.31
	20–40 year	4.14	0.62	3.95	4.34	4.07	0.64	3.85	4.30
	40–60 year	4.38	0.76	4.05	4.72	3.98	0.94	3.56	4.41
	60–80 year	4.68	0.80	4.38	4.99	3.06	0.26	2.82	3.30
	Total	4.34	0.74	4.20	4.49	3.99	0.71	3.84	4.14
Width of orbital opening	1–20 year	2.82	0.54	2.55	3.09	2.85	0.50	2.66	3.04
	20–40 year	3.24	0.53	3.07	3.40	3.08	0.66	2.85	3.31
	40–60 year	3.13	0.44	2.93	3.32	3.06	0.60	2.78	3.33
	60–80 year	3.34	0.69	3.07	3.61	2.57	0.35	2.25	2.89
	Total	3.17	0.58	3.06	3.28	2.97	0.59	2.84	3.09
Width at the center of canal	1–20 year	3.77	0.57	3.49	4.05	4.08	0.71	3.80	4.36
	20–40 year	3.90	0.79	3.66	4.15	3.84	0.44	3.68	3.99
	40–60 year	4.02	0.45	3.82	4.22	3.82	0.43	3.62	4.01
	60–80 year	4.16	0.98	3.78	4.54	3.54	0.44	3.13	3.95
	Total	3.97	0.76	3.83	4.12	3.88	0.55	3.77	4.00
Length of the canal between orbital and cranial openings	1–20 year	8.82	1.31	8.17	9.47	8.61	2.08	7.80	9.41
	20–40 year	10.20	1.89	9.61	10.79	9.84	1.51	9.31	10.36
	40–60 year	9.93	1.25	9.38	10.48	9.50	1.52	8.81	10.20
	60–80 year	9.75	1.40	9.21	10.29	9.89	1.30	8.70	11.09
	Total	9.81	1.62	9.50	10.11	9.38	1.75	9.01	9.75
Distance from the mid sagittal plane	1–20 year	10.33	1.22	9.73	10.94	9.83	2.02	9.05	10.62
	20–40 year	10.66	1.92	10.06	11.26	9.64	1.45	9.14	10.15
	40–60 year	10.91	1.67	10.17	11.65	10.27	1.77	9.46	11.08
	60–80 year	11.42	1.21	10.95	11.89	9.85	1.44	8.52	11.18
	Total	10.85	1.63	10.54	11.16	9.87	1.71	9.51	10.22