Attention-deficit/hyperactivity disorder children exhibit an impaired accommodative response

  • Beatriz Redondo
  • Jesús Vera
  • Rubén Molina
  • José Antonio García
  • Miriam Ouadi
  • Antonio Muñoz-Hoyos
  • Raimundo Jiménez
Pediatrics
  • 43 Downloads

Abstract

Purpose

Attention-deficit/hyperactivity disorder (ADHD) is one of the most common paediatric neurobehavioural disorders causing multiple functional impairments in children. Based on the relationship between the neural system that controls attention and ocular dynamics, the present study compares the magnitude and variability of accommodation between a group of non-medicated ADHD children and an age-matched control group.

Methods

The magnitude and variability of the accommodative response were objectively measured in 36 children using the WAM-5500 autorefractometer for 90 consecutive seconds at three static viewing distances (500, 40, and 20 cm). Participants were divided into ADHD (n = 18) or control (n = 18) groups based on clinically validated criteria.

Results

Children with ADHD exhibited higher lags of accommodation (p = 0.024), increasing at closer viewing distances, in comparison to the control group. Marginal statistical differences were found for the variability of accommodation (p = 0.066), with the ADHD group showing a trend towards higher variability. Our analysis showed that the magnitude and variability of accommodation did not vary over time between groups (p > 0.05).

Conclusions

Our data suggest that children with ADHD have a less accurate accommodative response. These results provide a new ocular index that could help to clarify the relationship between accommodative response and attentional deficits, which could have a direct impact on the academic, cognitive, and visual performance of ADHD children.

Keywords

ADHD Attention Lag of accommodation Accommodative variability 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (name the institution/committee) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of OpticsUniversity of GranadaGranadaSpain
  2. 2.Neuropaediatrics Service, Faculty of MedicineUniversity of GranadaGranadaSpain
  3. 3.Paediatrics Service, Faculty of MedicineUniversity of GranadaGranadaSpain

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