Prognostic values of optic nerve sheath diameter for comatose patients with acute stroke: An observational study

Figure 1 Measurement methods for optic nerve sheath diameter and eyeball transverse diameter. A: The optic nerve sheath diameter was measured at 3 mm behind the eyeball by the cranial computed tomography (CT) scan; B: Eyeball transverse diameter was measured by the cranial CT scan.

Figure 2 Receiver operating characteristic curves for comparing the efficiency of the optic nerve sheath diameter and optic nerve sheath diameter/eyeball transverse diameter ratio in predicting prognosis of comatose patients with acute stroke. ONSD: Optic nerve sheath diameter; ETD: Eyeball transverse diameter.