Introduction: In preeclampsia (PE), there are no reliable markers for the evaluation of neurological damage unlike other multivisceral damage. Clinical studies have suggested that ultrasound measurement of optic nerve sheath diameter (ONSD) can detect raised intracranial pressure in PE.

Objectives of the work: Demonstrate that there is intracranial hypertension (ICHT) in pre-eclamptic women using ultrasound measurement of ONSD, determine the degree of correlation between ONSD and the severity of preeclampsia.

Methods: This is a prospective comparative study of 60 patients (20 controls, 20 moderate PE and 20 severe PE). A ONSD measurement was performed by a blind radiologist before delivery and 48 hours after.

Results: The mean ONSD was significantly higher in pre-eclamptic patients. A statistically significant correlation was noted between systolic blood pressure, diastolic blood pressure, average blood pressure and the degree of enlargement of the optic nerve sheath(ONS). However, the presence of neurosensory signs or signs of severity was not associated with higher ONSD.

Conclusion: ultrasound measurement of ONSD can detect ICHT in pre-eclamptic patients. It is a non-invasive and easily accessible method that can help in the management of preeclampsia.