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Pretectal eyelid retraction and lag
Author(s) -
Galetta Steven L.,
Gray Lawrence G.,
Raps Eric C.,
Schatz Norman J.
Publication year - 1993
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410330522
Subject(s) - eyelid , posterior commissure , commissure , lesion , periaqueductal gray , anatomy , magnetic resonance imaging , medicine , anterior commissure , neuroscience , psychology , nucleus , midbrain , ophthalmology , central nervous system , surgery , radiology
We report 2 patients who had eyelid retraction and eyelid lag with minimal impairment of vertical gaze. In both patients, magnetic resonance imaging demonstrated a circumscribed unilateral lesion immediately rostral and dorsal to the red nucleus involving the lateral periaqueductal gray area. Our clinical and radiological findings support the existence of a premotor eyelid control center in the region of the nucleus of the posterior commissure.