Measurement of the Orbital Soft Tissue Volume in Chinese Adults Based on Three-Dimensional CT Reconstruction

Table 2

Orbital fat volume, orbital muscle volume, orbital bony cavity volume, intraorbital optic nerve volume, and their ratios in normal Chinese orbits.

	Male (n = 52)	Female (n = 51)	value
			Unadjusted	Adjusted for age
OV, mean ± SD, cm^3	22.2 ± 2.2	20.2 ± 1.5	<0.001	<0.001
FV, mean ± SD, cm^3	8.89 ± 1.79	8.09 ± 1.74	0.024	<0.001
MV, mean ± SD, cm^3	1.94 ± 0.34	1.57 ± 0.28	<0.001	<0.001
iONV, mean ± SD, cm^3	0.405 ± 0.077	0.362 ± 0.074	0.005	0.036
FV/OV, mean ± SD	0.399 ± 0.063	0.398 ± 0.069	0.937	0.107
MV/OV, mean ± SD	0.0872 ± 0.0131	0.0782 ± 0.0130	0.001	0.017
iONV/OV, mean ± SD	0.0183 ± 0.0036	0.0180 ± 0.0037	0.702	0.516

FV, fat volume; iONV, intraorbital optic nerve volume; MV, muscle volume; SD, standard deviation; OV, orbital bony cavity volume.