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CC BY 4.0 · Int Arch Otorhinolaryngol 2025; 29(01): s00441791643
DOI: 10.1055/s-0044-1791643
Original Research

The Near Point of Convergence in Patients with Vestibular Migraine

Francisco Carlos Zuma e Maia 
1   Department of Otorhinolaryngology, Clínica Maia, Canoas, RS, Brazil
,
Bernardo Faria Ramos 
2   Department of Otorhinolaryngology, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
,
Roseli Saraiva Moreira Bittar 
3   Department of Otoneurology, Hospital das Clínicas da Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
,
Renato Valerio Rodrigues Cal 
4   Department of Otorhinolaryngology, Centro Universitário do Estado do Pará (CESUPA), Belém, PA, Brazil
,
Leonel Almeida Luís 
5   Department of Otorhinolaryngology, Centro Hospitalar Universitário Lisboa Norte EPE, Lisboa, Portugal
6   Department of Otorhinolaryngology, Faculty of Medicine, Universidade de Lisboa, Lisboa, Portugal
,
Pedro Luiz Mangabeira Albernaz 
7   Department of Otorhinolaryngology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
› Author Affiliations Funding The authors declare that they did not receive financial support from agencies in the public, private, or non-profit sectors to conduct the present study.
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Abstract

Introduction Vestibular migraine (VM) is one of the most common vestibular disorders and its diagnosis is based entirely on clinical features. A recent case series suggested a possible link between migraines and convergence insufficiency.

Objective To compare the near point of convergence (NPC) in patients with and without VM.

Methods We retrospectively reviewed the data of 50 patients with and 50 without VM, comparing the NPC between both groups. The NPC was measured according to the recommendations of the American Academy of Ophthalmology. Differences in the results between groups were compared using the Mann-Whitney test. The association of the NPC with age, gender, and the use of corrective glasses or contact lenses was evaluated by the Student t or Mann-Whitney tests for parametric and nonparametric data, respectively. To determine the diagnostic accuracy and optimal cut-off point, receiver operating characteristic (ROC) curves were created.

Results The mean NPC was significantly higher in patients with VM (18.50 ± 5.88 cm) compared to the control group (8.06 ± 1.46 cm; p < 0.001). The area under the curve (AUC) was 0.986 (95% CI: 0.938–0.999; p < 0.0001), suggesting that NPC was able to accurately discriminate between patients with and without VM with a sensitivity of 94% and specificity of 100%.

Conclusion Our results suggest that convergence insufficiency is a common sign in patients with VM and may be considered a potential clinical biomarker. However, further studies are needed to confirm this hypothesis.

Keywords

migraine disorders - near point of convergence - convergence insufficiency - biomarkers


Publication History

Received: 21 December 2023

Accepted: 21 August 2024

Article published online:
05 February 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution 4.0 International License, permitting copying and reproduction so long as the original work is given appropriate credit (https://creativecommons.org/licenses/by/4.0/)

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Bibliographical Record
Francisco Carlos Zuma e Maia, Bernardo Faria Ramos, Roseli Saraiva Moreira Bittar, Renato Valerio Rodrigues Cal, Leonel Almeida Luís, Pedro Luiz Mangabeira Albernaz. The Near Point of Convergence in Patients with Vestibular Migraine. Int Arch Otorhinolaryngol 2025; 29: s00441791643.
DOI: 10.1055/s-0044-1791643