Pupil

Argyll-Robertson Pupil : Remember A-R-P, P-R-A : Accomodation Reflex Present, Pupilary Reflex Absent. Pupillary reflex absent due to damage at Pretectal area. Also called the "Prostitute's pupil" (Syphilitic pupil)

What is HIPpus: It is alternate RYTHMic contractions and dialatation of the pupil. (Remember, the pupil plays HIP HOP to RYTHM)