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Isolated trochlear nerve palsy with midbrain hemorrhage

S Raghavendra1, K Vasudha, S Ravi Shankar

  • 1Department of Neuroophthalmology and Department of Neuropathology, Narayana Netaralaya, Bangalore, India.

Indian Journal of Ophthalmology
|December 24, 2009
PubMed

Midbrain hemorrhage causing isolated fourth nerve palsy is extremely rare. Idiopathic, traumatic and congenital abnormalities are the most common causes of fourth nerve palsy. We report acute isolated fourth nerve palsy in an 18-year-old lady due to a midbrain hemorrhage probably due to a midbrain cavernoma. The case highlights the need for neuroimaging in selected cases of isolated trochlear nerve palsy.

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