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April 1978

The Inverse Marcus Gunn Phenomenon: An Electromyographic Contribution

Author Affiliations

From the Department of Ophthalmology, Mount Sinai School of Medicine, and the New York Eye and Ear Infirmary, New York.

Arch Neurol. 1978;35(4):249. doi:10.1001/archneur.1978.00500280067015

• A patient with the inverse Marcus Gunn anomaly is presented. Electromyographic studies showed the salient fact that the closing of the involved eye on opposite motion of the lower jaw was not mediated by seventh nerve stimulation of the orbicularis oculi but by inhibition of the homolateral levator palpebrae superioris. As a consequence of this observation, a specific and effective operation could be planned.

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