From: Ultrasonographic measurement of the optic nerve sheath diameter to detect intracranial hypertension: an observational study
Mean ± SD
Range (min–max)
Age (years)
42 ± 16
55 (73–18)
ONSD
5.4 ± 0.7
3.5 (7.3–3.8)
n = 56 (%)
Sex
Male
40 (71.4)
Female
16 (28.6)
Diagnosis
TBI
39 (69.6)
SAH
15 (26.7)
ICH
2 (3.6)