A young woman presented with the recent onset of an inability to move
the eyes on a horizontal plane. Examination revealed limited horizonta
l gaze to the right and a complete left ophthalmoplegia. The limitatio
n of eye movement could not be overcome by the doll's head maneuver. O
ther signs included bilateral orbicularis oculi weakness and brisk dee
p tendon reflexes. Her condition gradually improved and two months fol
lowing the onset of the illness she was symptom free.