Conjugate eye movement refers to motor coordination of the eyes that allows for bilateral fixation on a single object. Several centers in the brainstem are involved. Horizontal conjugate gaze is controlled by the nuclei of CN III and CN VI, the paramedian pontine reticular formation

Paramedian pontine reticular formation

The paramedian pontine reticular formation, or PPRF, is part of the pontine reticular formation, a brain region without clearly defined borders in the center of the pons. It is involved in the coordination of eye movements, particularly horizontal gaze and saccades.- Input, Output, and Function...

, and the nucleus prepositus hypoglossi

Nucleus prepositus hypoglossi

Located in the medulla, the nucleus prepositus hypoglossi or NPH is part of the horizontal gaze holding system. It functions as a neural integrator....

-medial vestibular nucleus. Vertical conjugate gaze is controlled by the nuclei of CN III and CN IV, the rostral interstitial nucleus of medial longitudinal fasciculus

Rostral interstitial nucleus of medial longitudinal fasciculus

The rostral interstitial nucleus of medial longitudinal fasciculus is a portion of the medial longitudinal fasciculus which controls vertical gaze.They project to the vestibular nuclei.-External links:...

(riMLF)] , and the Interstitial Nucleus of Cajal.