Neuro

Trochlear Nerve Palsy (CNIV)

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Pathology

Damage to trochlear nerve – Affecting superior oblique muscle

Aetiology

Trauma, raised intracranial pressure, congenital palsy

Signs

Eye is held slightly elevated and is unable to look down and in

Symptoms

Diplopias.

Investigations

Clinical Examination

Treatment

Medical: Prisms, Botulinum Toxin
Surgical: Correct of deficit

Prognosis

Dependent on cause 

Key Facts

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Key Images

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Key References

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