Fixation stability as a biomarker for differentiating mild traumatic brain injury from age matched controls in pediatrics.

Abstract:

OBJECTIVES:Traumatic brain injury (TBI) is an increasingly significant health concern worldwide, compounded by the difficultly in detection and diagnosis. Fortunately, a growing body of research has identified oculomotor behavior, specifically fixations, saccades and smooth pursuit eye movements as a promising endophenotype for neurotrauma. To date, limited research exists using fixation stability in a comparative study to indicate the presence of a mild TBI (mTBI), especially in the pediatric population. METHODS:The present study examined data from 91 individuals clinically diagnosed with mTBI and a further 140 age- and gender-matched controls. They all completed the RightEye fixation stability test using a remote eye tracker. Participants were compared on five fixation metrics: Bivariate Contour Ellipse Area (BCEA), Convergence Point, Depth, Disassociated Phoria, and Targeting Displacement. RESULTS:Results were analyzed using one-way univariate ANOVAs, ROC analysis, and stepwise logistic regression. BCEA results revealed significant differences between groups with the mTBI group showing a larger gaze spread, indicative of less ability to keep the eyes close to the target without deviating. CONCLUSIONS:Fixation stability is detrimentally impacted by mTBI in pediatric patients, and the oculomotor test can be used to differentiate between those with and without an mTBI.

journal_name

Brain Inj

journal_title

Brain injury

authors

Hunfalvay M,Murray NP,Carrick FR

doi

10.1080/02699052.2020.1865566

subject

Has Abstract

pub_date

2020-12-24 00:00:00

pages

1-6

eissn

0269-9052

issn

1362-301X

pub_type

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