Fig. 5From: Assessment of intracranial pressure with ultrasonographic retrobulbar optic nerve sheath diameter measurementThe scan images of ONSD measurement with B-scan ultrasound. a is the picture of ultrasonic measurement of ONSD in a high intracranial pressure patient. In this picture, there is a more significant subarachnoid space around optic nerve. b is the picture of ultrasonic measurement of ONSD in a normal intracranial pressure patientBack to article page