Intra‐ and Interobsever Reliability of Sonographic Assessment of the Optic Nerve Sheath Diameter in Healthy Adults

The use of an ultrasound-based evaluation of the optic nerve sheath diameter (ONSD) has previously been demonstrated for detecting raised intracranial pressure. In order to be feasible in clinical workup, the test qualities of transorbital ultrasonography need to be determined. The aim of this study was therefore to establish normal values and to assess the intra- and interobserver reliability of this method.Using a 9-3 MHz linear array...