Optic Nerve Sheath Diameter on Sonography in Idiopathic Intracranial Hypertension Versus Normal (original) (raw)

OBJECTIVE To compare the mean optic nerve sheath diameter (ONSD) in patients with idiopathic intracranial hypertension (IIH) versus normal healthy individuals using B-scan ultrasonography as diagnostic tool. STUDY DESIGN Cross-sectional analytical study. PLACE AND DURATION OF STUDY Armed Forces Institute of Radiology and Imaging, Rawalpindi, Pakistan, from June to December 2015. METHODOLOGY Participants aged 30 - 50 years were divided into two groups. Group A(GP) comprised of patients who were diagnosed cases of idiopathic intracranial hypertension while normal healthy adults who volunteered to participate in the study were included in Group B (GC). Ocular B mode ultrasound scan was performed on all the participants and each eye was considered separately. The optic nerve head was visualized as a linear hypoechoic structure, and ONSD was measured 3 mm behind the retina. Atotal of three readings were taken by the same radiologist and the average of three was recorded. Mean values of b...