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Copyright ©The Author(s) 2021.
World J Crit Care Med. Sep 9, 2021; 10(5): 204-219
Published online Sep 9, 2021. doi: 10.5492/wjccm.v10.i5.204
Figure 11
Figure 11  Optic nerve sheath diameter. High frequency 5-10 MHz linear probe in “Ophthalmic” or “Venous” preset with probe gently placed on upper eyelid in horizontal plane. Diameter of optic nerve is measured in transverse dimension, 3 mm posterior to where optic nerve enters the globe. In this patient optic nerve sheath diameter is measured at 3.5 mm.