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Unilateral compressive optic neuropathy due to skull hyperostosis secondary to nutritional vitamin A deficiency
Mohammed G Zayed1, Simon J Hickman2, Ruth Batty3
1Department of Ophthalmology, Royal Hallamshire Hospital, Sheffield, UK.
Abstract:
We report a 17-year-old boy who presented with a chronic left unilateral optic neuropathy. Computerized tomography and magnetic resonance imaging demonstrated compression of the left optic nerve due to skull hyperostosis. He was found to be profoundly vitamin A deficient secondary to an unusual diet consisting predominantly of potato chips and crisps. Skull hyperostosis with cranial neuropathies and other neurological abnormalities has been described in growing animals fed vitamin A deficient diets but has not been previously reported in humans.
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