<prompt> Argyll Robeson pupil results from the lesion ofTectum regionCiliary ganglionLateral geniculate bodyAccessory ganglion  <response>: Argyll Robeson pupil ARP: Here the pupil is slightly small in size and reaction to near reflex is present but light reflex is absent, i.e., there is light near dissociation to remember, the acronym ARP may stand for accommodation reflex present. It is caused by a lesion usually neurosyphilis in the region of tectum. Ref:- A K KHURANA; pg num:-293 