Journal article
Underlying neurological mechanisms associated with symptomatic convergence insufficiency
Scientific reports, v 11(Mar (E-published)), 6545
22 Mar 2021
PMID: 33753864
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Convergence insufficiency (CI) is the most common binocular vision problem, associated with blurred/double vision, headaches, and sore eyes that are exacerbated when doing prolonged near work, such as reading. The Convergence Insufficiency Neuro-mechanism Adult Population Study (NCT03593031) investigates the mechanistic neural differences between 50 binocularly normal controls (BNC) and 50 symptomatic CI participants by examining the fast and slow fusional disparity vergence systems. The fast fusional system is preprogrammed and is assessed with convergence peak velocity. The slow fusional system optimizes vergence effort and is assessed by measuring the phoria adaptation magnitude and rate. For the fast fusional system, significant differences are observed between the BNC and CI groups for convergence peak velocity, final position amplitude, and functional imaging activity within the secondary visual cortex, right cuneus, and oculomotor vermis. For the slow fusional system, the phoria adaptation magnitude and rate, and the medial cuneus functional activity, are significantly different between the groups. Significant correlations are observed between vergence peak velocity and right cuneus functional activity (
p
= 0.002) and the rate of phoria adaptation and medial cuneus functional activity (
p
= 0.02). These results map the brain-behavior of vergence. Future therapeutic interventions may consider implementing procedures that increase cuneus activity for this debilitating disorder.
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Details
- Title
- Underlying neurological mechanisms associated with symptomatic convergence insufficiency
- Creators
- Tara L. Alvarez - New Jersey Institute of TechnologyMitchell Scheiman - Salus UniversityCristian Morales - New Jersey Institute of TechnologySuril Gohel - Rutgers, The State University of New JerseyAyushi Sangoi - New Jersey Institute of TechnologyElio M. Santos - New Jersey Institute of TechnologyChang Yaramothu - New Jersey Institute of TechnologyJohn Vito d’Antonio-Bertagnolli - New Jersey Institute of TechnologyXiaobo Li - New Jersey Institute of TechnologyBharat B. Biswal - New Jersey Institute of Technology
- Publication Details
- Scientific reports, v 11(Mar (E-published)), 6545
- Publisher
- Nature Publishing Group
- Number of pages
- 10
- Grant note
- R01EY023261; R01EY023261 / ;
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pennsylvania College of Optometry (PCO)
- Web of Science ID
- WOS:000634964800011
- Scopus ID
- 2-s2.0-85103206404
- Other Identifier
- 991021901814004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Ophthalmology