Pretectal eyelid retraction and lag.
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.
Department of Neurology, University of Pennsylvania School of Medicine, Philadelphia.
S L
SL
Galetta
L G
LG
Gray
E C
EC
Raps
N J
NJ
Schatz
D000328:Adult; D004172:Diplopia / Q000209:etiology*; D004401:Dysarthria / Q000209:etiology; D004576:Electromyography; D005141:Eyelid Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010487:Periaqueductal Gray / Q000473:pathology; D012012:Red Nucleus / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed