Contents | 10 of 21

Pupil perimetry demonstrates hemifield pupillary hypokinesia in a patient with a pretectal lesion causing a relative afferent pupil defect but no visual field loss.

Update Item Information
Title Journal of Neuro-Ophthalmology, March 2009, Volume 29, Issue 1
Date 2009-03
Language eng
Format application/pdf
Type Text
Publication Type Journal Article
Collection Neuro-Ophthalmology Virtual Education Library: Journal of Neuro-Ophthalmology Archives: https://novel.utah.edu/jno/
Publisher Lippincott, Williams & Wilkins
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah
Rights Management © North American Neuro-Ophthalmology Society
ARK ark:/87278/s6tt7x2z
Setname ehsl_novel_jno
ID 225836
Reference URL https://collections.lib.utah.edu/ark:/87278/s6tt7x2z

Page Metadata

Title Pupil perimetry demonstrates hemifield pupillary hypokinesia in a patient with a pretectal lesion causing a relative afferent pupil defect but no visual field loss.
Creator Papageorgiou, Eleni; Wermund, Thomas; Wilhelm, Helmut
Affiliation Center for Ophthalmology, University of Tbingen, Tbingen, Germany.
Abstract BACKGROUND: Lesions affecting the pretectum or the brachium of the superior colliculus (brachium) and sparing the optic tract cause a contralateral relative afferent pupil defect (RAPD) but no visual field loss. It has been assumed that the pupillomotor pathways within the brachium are a continuation of the pupillomotor pathways traveling in the optic tract. To investigate this assumption, we looked for hemihypokinesia by means of pupil perimetry. METHODS: Pupillary hemifield stimulation was performed in a 65-year-old woman with normal visual fields and an isolated left RAPD due to a cerebral hemorrhage affecting the right dorsal midbrain. The pupil responses from light stimulation of the nasal inferior, nasal superior, and temporal inferior and temporal superior quadrants of both eyes were recorded using computerized binocular infrared pupillography. Each stimulus was presented 5 times and the mean amplitude of the pupil response was calculated for each stimulus location. RESULTS: Pupil perimetry demonstrated a marked hemihypokinesia (reduced light reaction) in the hemifield contralateral to the site of the lesion. CONCLUSIONS: Our experiment suggests that the brachium is indeed a continuation of the afferent pupillary fibers traveling in the optic tract.
Subject Older people; Basal Ganglia Hemorrhage; Female; Humans; Hypokinesia; Perimetry; Pupil; Pupil Disorders; Reflex, Pupillary; Superior Colliculi; Tomography, X-Ray Computed; Visual Acuity; Visual Fields
OCR Text Show
Format application/pdf
Publication Type Journal Article
Collection Neuro-Ophthalmology Virtual Education Library: Journal of Neuro-Ophthalmology Archives: https://novel.utah.edu/jno/
Publisher Lippincott, Williams & Wilkins
Holding Institution Spencer S. Eccles Health Sciences Library, University of Utah
Rights Management © North American Neuro-Ophthalmology Society
Setname ehsl_novel_jno
ID 225824
Reference URL https://collections.lib.utah.edu/ark:/87278/s6tt7x2z/225824
Back to Search Results