Fig. 1From: Diagnostic and prognostic value of the optic nerve sheath diameter with respect to the intracranial pressure and neurological outcome of patients following hemicraniectomyIllustration of ONSD performance and B-mode image of ONSD measurement. A linear high frequency probe placed on the closed eye in transverse visual axis plane, and then adjusted the depth and angle of ultrasound to show the image of ONSD clearly, measure the width of ONSD at 3 mm behind the globe. ONSD optical nerve sheath diameterBack to article page