Table 2

Inter-observer variability for optic nerve (and sheath) diameters


Optic nerve diameter
Optic nerve sheath diameter

Mean standard deviation (mm)
0.25
0.17
Mean difference (mm)
0.30
0.11

The inter-observer variability was tested in 23 randomly selected magnetic resonance imaging datasets.

Geeraerts et al. Critical Care 2008 12:R114   doi:10.1186/cc7006