How would the nurse assess the integrity of the optic nerve in the patient who sustained a cva

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Causes of Post-Traumatic Acute Visual Loss

Refractive Error
Glasses or contact lenses are lost or damaged at the time of trauma
Ocular Injury
Ruptured globe (anterior with corneal laceration or posterior with scleral laceration)
Intraocular foreign body
Exposure keratopathy (secondary to proptosis, lid laceration, or 7th nerve dysfunction)
Corneal edema (from airbag injury)
Corneal abrasion
Hyphema (blood in anterior chamber)
Traumatic iritis (often delayed by approximately 24 h)
Traumatic mydriasis (and decreased accommodation)
Lens subluxation or luxation
Vitreous hemorrhage
Commotio retinae
Retinal detachment
Retinal ischemia from carotid dissection
Retinal fat emboli
Choroidal rupture
Optic Nerve
Direct traumatic optic neuropathy
Indirect traumatic optic neuropathy
Intrasheath hematoma
Avulsion of the optic nerve head
Penetrating injuries of the orbit with direct optic nerve injury
Intraorbital foreign body
Optic nerve ischemia from carotid dissection
Orbit
Orbital fracture
Orbital hemorrhage
Orbital emphysema
Carotid cavernous fistula
Subperiosteal hemorrhage
Intracranial Optic Pathways
Chiasmal or retrochiasmal direct injury
Chiasmal or retrochiasmal indirect injury
Hemorrhage or hematoma compressing the chiasm
Cerebral diffuse axonal injury with homonymous hemianopia
Intraparenchymal hemorrhage with homonymous hemianopia
Cerebral infarction (posterior cerebral artery) secondary to increased intracranial pressure/herniation with homonymous hemianopia or cerebral blindness
Cerebral infarction secondary to cervical artery dissection with homonymous hemianopia or cerebral blindness