The document discusses eye movement control systems in humans. It describes the different types of eye movements including saccades, smooth pursuit, optokinetic, and vestibulo-ocular reflexes. It outlines the major brainstem control centers involved including the PPRF, riMLF, MLF, vestibular nuclei, and cerebellum. Supranuclear control is provided by the frontal eye fields, parieto-occipital junction, and superior colliculus. Common eye movement disorders are also summarized.