Transethmoid decompression of the optic nerve.
Delayed visual deterioration following trauma to the head can result from injury to the optic nerve or central visual pathways. Surgical decompression of the medial optic canal is indicated when central nervous system causes are ruled out and vision fails to improve on megadose intravenous steroids.
D006259:Craniocerebral Trauma / Q000150:complications; D006801:Humans; D009900:Optic Nerve / Q000033:anatomy & histology / Q000601:surgery*; D020221:Optic Nerve Injuries; D010256:Paranasal Sinuses / Q000601:surgery; D014786:Vision Disorders / Q000209:etiology; D014949:Wounds, Nonpenetrating / Q000150:complications