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Related Concept Videos

Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
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Related Experiment Video

Updated: Nov 4, 2025

Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior
07:09

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Capturing attention improves accommodation: An experimental study in children with ADHD using multiple object

Rubén Molina1, Beatriz Redondo1, Antonio Molina-Carballo2

  • 1CLARO (Clinical and Laboratory Applications of Research in Optometry) Research Group, Department of Optics, Faculty of Sciences, University of Granada, Spain.

Vision Research
|May 29, 2021
PubMed
Summary

Attention significantly impacts eye focusing in children. Increased attentional demand reduced accommodative lag in children with and without attention deficit hyperactivity disorder (ADHD), suggesting attention

Keywords:
ADHDAttentional loadLag of accommodationMultiple object trackingVariability of accommodation

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Developmental Psychology

Background:

  • Attention deficit hyperactivity disorder (ADHD) is associated with visual processing differences.
  • The relationship between attentional load and visual functions like accommodation requires further investigation.

Purpose of the Study:

  • To investigate how manipulating attentional load affects accommodative response dynamics in children with ADHD.
  • To explore the influence of ADHD medication on these visual dynamics.

Main Methods:

  • Utilized a multiple object tracking (MOT) task to vary attentional load in children with and without ADHD.
  • Monitored accommodative and pupil dynamics using an open-field autorefractometer (WAM-5500).
  • Compared accommodative lag and variability between medicated, non-medicated ADHD groups, and controls.

Main Results:

  • Increased attentional load reduced accommodative lag in both ADHD and control groups.
  • Pupil size increased with task complexity, validating the attentional manipulation.
  • Non-medicated children with ADHD showed greater accommodative variability than controls.

Conclusions:

  • Attentional allocation critically influences accommodative response dynamics.
  • Findings suggest potential relevance for diagnosing and treating accommodative deficits in children, with or without ADHD.
  • ADHD medication status may influence accommodative stability.