We present the case of a woman with epileptic seizures consisting of sustained fluctuation of perception of brightness. [sro.sussex.ac.uk]

They are present in everybody and increase slightly at high luminances. The frequency of these oscillations is about 1.4 Hz. [medical-dictionary.thefreedictionary.com]

Vegetative responses are commonly present during and following epileptic seizures. [onlinelibrary.wiley.com]

Results: Pupillary hippus with a distinct dominant frequency was present in all measures at baseline (mean: 0.62 Hz, SD: 0.213 Hz), and that frequency did not change in any group (P = 0.971). [ncbi.nlm.nih.gov]

• Epilepsy

  Epilepsy causing pupillary hippus: an unusual semiology Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, Queen Square, London, United Kingdom Division of Neurophysiology,The National Hospital for Neurology and Neurosurgery [onlinelibrary.wiley.com]

  During the 19th century many clinical correlations of dubious value were made between hippus and various dire afflictions, including especially migraine, epilepsy, neurasthenia, brain tumor, hysteria, syphilis, myasthenia and 1. [jamanetwork.com]

  Centeno, Maria, Feldmann, Maria, Harrison, Neil A, Rugg-Gunn, Fergus J, Chaudhary, Umair, Falcon, Carles, Lemieux, Louis, Thom, Maria, Smith, Shelagh J M and Sisodiya, Sanjay M (2011) Epilepsy causing pupillary hippus: an unusual semiology. [sro.sussex.ac.uk]

• Cheyne-Stokes Respiration

  Hippus in Cheyne-Stokes Respiration, Arch Intern Med 122:116-121 ( (Aug) ) 1968. Crossref [jamanetwork.com]

  Marked pupillary oscillations can be present in normal subjects or associated with different conditions: diabetic neuropathy, night blindness, Cheyne‐Stokes respiration, prolonged exposure to video displays, or tabes dorsalis ( Bouma & Baghuis, 1971 ; [onlinelibrary.wiley.com]

• Hiccup

  See Hiccup. hip·pus ( hip'ŭs ) Intermittent pupillary dilation and constriction, independent of illumination, convergence, or psychic stimuli. [medical-dictionary.thefreedictionary.com]

• Abnormal Eye Movement

  Design/Methods: We retrospectively reviewed the spontaneous pupillary oscillations of 8 patients with PD at different stages of disease (age 56-86 mean 71) and 11 patients with neurologic disease who were tested because of abnormal eye movements (age [n.neurology.org]

• Night Blindness

  Marked pupillary oscillations can be present in normal subjects or associated with different conditions: diabetic neuropathy, night blindness, Cheyne‐Stokes respiration, prolonged exposure to video displays, or tabes dorsalis ( Bouma & Baghuis, 1971 ; [onlinelibrary.wiley.com]

• Blurred Vision

  They begin with a nonspecific experiential aura followed by what she describes as fluctuating changes in her perception of brightness and blurred vision. There are no other accompanying visual symptoms such as hallucinations or photopsia. [onlinelibrary.wiley.com]

• Photopsia

  There are no other accompanying visual symptoms such as hallucinations or photopsia. During these episodes, consciousness is preserved, but the patient describes difficulty in concentrating during a conversation. [onlinelibrary.wiley.com]

• Dermatitis

  Dermatitis 2(2): 136-137, 1991 Pupillary hippus. Neurology 37(3 SUPPL 1): 288, 1987 Susceptibility to induced visual discomfort during the menstrual cycle while viewing a visual display unit. [eurekamag.com]

• Suggestibility

  [G. hippos, horse, from a fancied suggestion of galloping movements] hippus Small rhythmic variations in the size of the pupils. They are present in everybody and increase slightly at high luminances. [medical-dictionary.thefreedictionary.com]

  ] It is usually normal, however pathological hippus can occur.[2][3] Pathologic hippus, the phenomenon of increased oscillation or their amplitude, is associated with aconite poisoning,[4] altered mental status, trauma, cirrhosis, and renal disease; suggesting [en.wikipedia.org]

  This suggests that the reduction in hippus following tropicamide is related to blocking the parasympathetic input to the pupil rather than the change in relative SNS and PNS input that occurs during pupil dilation. [iovs.arvojournals.org]

  Pathologic hippus, the phenomena 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. [grepmed.com]

  It was suggested that this hippus is concerned with cumulative asthenopia and/or general fatigue although the origin of hippus is still unknown. [tandfonline.com]

• Altered Mental Status

  mental status, trauma, cirrhosis, and renal disease; suggesting a common pathway of frontal lobe dysfunction.[5] A retrospective study of 117 hospitalized patients with hippus noted an increased 30-day mortality when compared to controls and adjusted [en.wikipedia.org]

  Pathologic hippus, the phenomena 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. [grepmed.com]

• Nystagmus

  It is said that hippus once meant a twitching of the eyelids, and that at one time it was synonymous with nystagmus, but for at least 150 years it has referred only to the pupil and has not been used to describe other occular movements. [jamanetwork.com]

  The most common diagnosis was nystagmus of unclear etiology. Pupil size of all patients was recorded in the same room with the same lighting using infrared video-oculography at 240 Hz. [n.neurology.org]

• Excitement

  Pupillary dilation accompanying epileptic seizures is brought about by a superimposition of both sympathetic excitation and parasympathetic inhibition, as proven by pharmacologic testing ( Klein & Early, 1948 ). [onlinelibrary.wiley.com]

• Rhythmic Slowing

  The first EEG change is a high frequency activity (20 Hz) recorded from electrodes TP8, O2, PO4 and T6, followed 4 seconds later by stereotyped 8 seconds run of rhythmic slow activity, maximal in the posterior region with right sided emphasis. [onlinelibrary.wiley.com]

• Cortical Tubers

  Coronal and sagittal T 2 ‐fluid‐attenuated inversion recovery (FLAIR): Multiple ill‐defined areas of hyperintense signal in T 2 ‐FLAIR sequence suggested the radiologic diagnosis of cortical tubers. [onlinelibrary.wiley.com]

Each subject received one drop to the randomly determined treatment eye, while the other eye served as control. Bilateral measures of pupil size and dynamics were made over 2.6 seconds using an infrared eye-tracker sampling at 500 Hz. [ncbi.nlm.nih.gov]

The most common diagnosis was nystagmus of unclear etiology. Pupil size of all patients was recorded in the same room with the same lighting using infrared video-oculography at 240 Hz. [n.neurology.org]