Acute ischemic optic neuropathy in a case of heroin overdose

Non-arteritic anterior ischemic optic neuropathy secondary to idiopathic intracranial hypertension

“…Table 4 summarizes the radiographic findings on MRI in NAION and IIH. 3 , 10 , 11 , 12 , 13 , 14 , 15 Post-contrast enhancement was seen in up to 2/5th of patients with NAION in one study and up to 1/5th had DWI abnormalties. 16 , 17 The radiographic findings of IIH (e.g., empty sella, fluid in the sheath, venous sinus stenosis) are not present in NAION.…”