Elevated intracranial pressure is one of the critical diseases in clinical practice
which might lead to cerebral dysfunction
even life-threatening condition.Thus
it requires a rapid and accurate diagnosis method to guide timely intervention and to assess follow-up treatment results.Based on the finding that optic nerve sheath diameter can changes with intracranial pressure
measurement of optic nerve sheath diameter by ultrasonography can evaluate intracranial pressure in a non-invasive and rapid way.This paper introduces its domestic and abroad research progresses.