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Transient Cortical Blindness
Aka: Transient Cortical Blindness, Post-Traumatic Transient Cortical Blindness
- See Also
- Vision Loss
- Epidemiology
- Most common in children
- Pathophysiology
- May be associated with occipital vessel vasospasm following Head Trauma
- Symptoms
- Transient bilateral Vision Loss (resolves after minutes to hours)
- May occur after Minor Head Injury
- No Eye Injury
- Signs
- Pupils with normal reactivity
- Normal Eye Exam
- Associated Conditions
- Migraine Headaches (in future)
- Differential Diagnosis
- Conversion Disorder (or other psychogenic blindness, Anxiety Disorder)
- Normal Eye Exam
- Reacts to visual threat
- Intact Optokinetic Reflex, Corrective Saccades or Nystagmus
- Eyes jerk back to initial position after following an object until out of Visual Field (full field motion)
- Occipital Epilepsy of childhood
- Seizure history
- Abnormal occipital findings on EEG
- Progressive Visual Scintillations followed by Headache
- Migraine Headache with Aura
- Increased Intracranial Pressure and Papilledema
- Idiopathic Intracranial Hypertension
- CNS Mass Lesion
- Toxins
- Methanol Poisoning
- Carbon Monoxide Poisoning
- Trauma
- Closed Head Injury
- Cervical Spine Fracture with Vertebral Artery injury
- Other causes
- Meningitis or Encephalitis
- References
- Becker in Herbert (2020) EM:Rap 20(12): 6
- Iqbal in Teach (2019) Diagnostic Approach to Acute Vision Loss in Children, UpToDate, accessed 12/2/2020