Evidence map›Paper›PMID 25494197›Full record

ArticleJournal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society2015

Asymmetric papilledema in idiopathic intracranial hypertension.

Samuel Bidot, Beau B Bruce, Amit M Saindane, Nancy J Newman, Valérie Biousse

Abstract read
In one paragraph

Article in Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
  2. Article
  3. Review
  4. Article
  5. How to diagnose papilloedema.Practical neurology · 2026
    Review
  6. Article
  7. Article
  8. The challenge of diagnosing intracranial pressure elevations as an otolaryngologist.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Review
  9. Article
  10. Article
  11. Unilateral papilledema: illustrative case.Journal of neurosurgery. Case lessons · 2024
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article

1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Samuel BidotDepartments of Ophthalmology (SB, BBB, NJN, VB) and Neurology (BBB, NJN, VB), Emory University School of Medicine, Atlanta, Georgia; Department of Epidemiology (BBB), Rollins School of Public Health and Laney Graduate School, Atlanta, Georgia; and Departments of Radiology and Imaging Science (AMS) and Neurological Surgery (NJN), Emory University School of Medicine, Atlanta, Georgia.
Beau B Bruce
Amit M Saindane
Nancy J Newman
Valérie Biousse

Funding

P30-Core Grant for Vision Research Core CP30EY006360 · NEI · EMORY UNIVERSITY · PI NICKERSON, JOHN M · 1986 to 2025
$15.3M
Ocular fundus photos in the emergency room: a new application for telemedicine?K23EY019341 · NEI · EMORY UNIVERSITY · PI BRUCE, BEAU BENJAMIN · 2010 to 2014
$718k
NEI NIH HHS K23 EY019341NEI NIH HHS L30 EY019180NEI NIH HHS P30 EY006360NEI NIH HHS P30-EY06360
6 · The paper itself

Abstract

backgroundVery asymmetric papilledema in idiopathic intracranial hypertension (IIH) is rare, and few studies have dealt with this atypical presentation of IIH. Our aim was to describe the clinical and radiologic features of patients with IIH and very asymmetric papilledema.

methodsWe identified all adult patients from our IIH database with very asymmetric papilledema defined as a ≥2 modified Frisén grade difference between the 2 eyes. Demographic data and initial symptoms were collected, and all brain imaging studies performed at our institution were reviewed.

resultsOf the 559 adult patients with definite IIH, 20 (3.6%; 95% confidence interval [CI], 2.3-5.6) had very asymmetric papilledema at initial evaluation. They were older (39 vs 30 years; P < 0.001), had lower cerebrospinal opening pressure (35.5 vs 36 cm of water; P = 0.03), and were more likely to be asymptomatic compared with patients with symmetric papilledema (27% vs 3%; P < 0.001). Visual fields were worse on the side of the highest-grade papilledema (P = 0.02). The bony optic canal was smaller on the side of the lowest-grade edema in all 8 patients (100%) in whom the imaging was sufficient for reliable measurements (P = 0.008).

conclusionsIIH with very asymmetric papilledema is uncommon. Very asymmetric papilledema may result from differences in size of the bony optic canals, supporting the concept of compartmentation of the perioptic subarachnoid spaces.

Indexed as

AdolescentAdultBody Mass IndexBrainFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedPapilledemaPseudotumor CerebriRetrospective StudiesStatistics, NonparametricTomography Scanners, X-Ray ComputedVisual Fields

Identifiers

PMID25494197
PMCPMC4326590

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.