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Event Related Potentials ERPs and other EEG Based Methods for Extracting Biomarkers of Brain Dysfunction: Examples from Pediatric Attention Deficit/Hyperactivity Disorder ADHD
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Accommodation and pupil dynamics as potential objective predictors of behavioural performance in children with

Beatriz Redondo1, Jesús Vera1, Ruben Molina1

  • 1Department of Optics, Faculty of Sciences, University of Granada, Granada, Spain.

Vision Research
|July 19, 2020
PubMed

Insights

Children with attention deficit hyperactivity disorder (ADHD) show reduced eye accommodation during tasks. Ocular dynamics, like accommodation and pupil size variability, correlate with behavioral performance in ADHD, suggesting diagnostic potential.

Area of Science:

  • Ophthalmology and Neuroscience
  • Pediatric Psychology

Background:

  • Attention deficit hyperactivity disorder (ADHD) is often associated with visual processing differences.
  • Understanding ocular function in ADHD is crucial for diagnosis and intervention.

Purpose of the Study:

  • To investigate ocular accommodation and pupil size dynamics in children with ADHD.
  • To assess the relationship between these ocular variables and behavioral performance on a continuous performance task.

Main Methods:

  • Objective measurement of accommodation and pupil dynamics using a WAM-5500 auto-refractor.
  • Continuous performance task execution in 23 non-medicated children with ADHD and 31 controls (ages 6-14).
  • Analysis of accommodation/pupil magnitude and variability over time-on-task.

Main Results:

  • Children with ADHD exhibited reduced accommodative response (higher accommodation lags) during the task.
  • No significant group differences were found for other ocular indices.
  • Variability in accommodation and pupil diameter correlated with behavioral performance in the ADHD group, but not in controls.

Conclusions:

  • Accommodation dynamics, specifically lags, may be impaired in children with ADHD during cognitive tasks.
  • Ocular variability metrics show potential as predictors of behavioral performance in ADHD.
  • These findings suggest ocular dynamics could enhance the diagnostic accuracy for ADHD.

Keywords:
ADHDAccommodative responseBehavioural predictorsContinuous performance taskPupil size

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