Hippus pupil12/29/2022 ![]() Anisocoria - condition characterized by an unequal size of the eyes' pupils.A retrospective study of 117 hospitalized patients with hippus noted an increased 30-day mortality when compared to controls and adjusted for other factors. Pathologic hippus, the phenomenon of increased oscillation or their amplitude, is associated with aconite poisoning, altered mental status, trauma, cirrhosis, and renal disease suggesting a common pathway of frontal lobe dysfunction. It is usually normal, however pathological hippus can occur. It is particularly noticeable when pupil function is tested with a light, but is independent of eye movements or changes in illumination. ![]() Pupillary hippus comes from the Greek hippos meaning horse, perhaps due to the rhythm of the contractions representing a galloping horse. Pupillary hippus, also known as pupillary athetosis, is spasmodic, rhythmic, but regular dilating and contracting pupillary movements between the sphincter. Khan report no disclosures.Pupillary hippus, also known as pupillary athetosis, is spasmodic, rhythmic, but regular dilating and contracting pupillary movements between the sphincter and dilator muscles. Phillips The purpose of this study was to determine the relative roles of the sympathetic (. Mirza Usman Baig, Premedical Undergraduate Student (The Honors College at the University of Houston), and Faisal Khan, MD, Consultant Neurologist (Sugar Land Neurology and Sleep, Texas) Turnbull, Nouzar Irani, Nicky Lim, John R. Increased Hospital Mortality in Patients with Bedside Hippus. Denny JC, Arndt FV, Dupont WD, Neilson EG.Pupillary Hippus as Clinical Manifestation of Refractory Autonomic Nonconvulsive Status Epilepticus: Pathophysiological Implications. Fernández-Torre JL, Paramio-Paz A, Lorda-de Los Rios I, Martin-Garcia M, Hernández-Hernández MA.Epilepsy Causing Pupillary Hippus: an Unusual Semiology. Centeno M, Feldmann M, Harrison NA, et al.Computerized Analysis of Pupillograms in studies of alertness. Hippus: Basically it is the alternative rhythmic dilatation and constriction of the pupil and this oscillation are very large and sometimes often independent of the light. The fibers of the sphincter pupillae encompass the pupil. A circular muscle called the sphincter pupillae accomplishes this task. Parasympathetic innervation leads to pupillary constriction. Invest Ophthalmol Vis Sci 2017 58:197–203. The physiology behind a 'normal' pupillary constriction is a balance between the sympathetic and parasympathetic nervous systems. Origins of Pupillary Hippus in the Autonomic Nervous System. ![]() Can be easily observed when light is shined on eyes.
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