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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.
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©2013 UpToDate ® Print Email The canaliculoocular reflexes Canal Preferred head motion Eye muscles excited Resulting eye motion Right horizontal Right turn Left lateral rectus Right medial rectus Leftward Right anterior Neck flexion Right head tilt Right superior rectus Left inferior oblique Elevation (right gaze) Counterclockwise torsion (left gaze) Right posterior Neck extension Right head tilt Left inferior rectus Right superior oblique Depression (left gaze) Counterclockwise torsion (right gaze) Left horizontal Left turn Right lateral rectus Left medial rectus Rightward Left anterior Neck flexion Left head tilt Left superior rectus Right inferior oblique Elevation (left gaze) Clockwise torsion (right gaze) Left posterior Neck extension Left head tilt Right inferior rectus Left superior oblique Depression (right gaze) Clockwise torsion (left gaze) Head and eye rotations are described from the point of view of the patient. As examples, a right head tilt is a clockwise rotation of the head; counterclockwise torsion of the eyes means that the superior pole of the eyes are tilted to the left. Right gaze: maximally in right gaze; left gaze: maximally in left gaze.