Normative Values of Saccades and Smooth Pursuit in Children Aged 5 to 17 Years

Solara Sinno; Fadi Najem; Kim Smith Abouchacra; Philippe Perrin; Georges Dumas

doi:10.3766/jaaa.19049

Journal of the American Academy of Audiology, Table of Contents

J Am Acad Audiol 2020; 31(06): 384-392
DOI: 10.3766/jaaa.19049

Research Article

Normative Values of Saccades and Smooth Pursuit in Children Aged 5 to 17 Years

Authors

Solara Sinno

¹EA 3450 DevAH, Development, Adaptation and Handicap, Faculty of Medicine and UFR STAPS, University of Lorraine, Villers-les-Nancy, France

²Department of Otolaryngology-Head and Neck Surgery, Audiology and Balance Center, American University of Beirut Medical Center, Beirut, Lebanon

³Medical Audiology Sciences Program, Health Profession Department, Faculty of Health Sciences, American University of Beirut, Beirut, Lebanon
Fadi Najem

³Medical Audiology Sciences Program, Health Profession Department, Faculty of Health Sciences, American University of Beirut, Beirut, Lebanon

⁴Department of Hearing and Speech, Amman Al-Ahliyya University, Amman, Jordan
Kim Smith Abouchacra

²Department of Otolaryngology-Head and Neck Surgery, Audiology and Balance Center, American University of Beirut Medical Center, Beirut, Lebanon

³Medical Audiology Sciences Program, Health Profession Department, Faculty of Health Sciences, American University of Beirut, Beirut, Lebanon
Philippe Perrin

¹EA 3450 DevAH, Development, Adaptation and Handicap, Faculty of Medicine and UFR STAPS, University of Lorraine, Villers-les-Nancy, France

⁵Department of Pediatric Oto-Rhino-Laryngology, University Hospital of Nancy, Vandoeuvre-les-Nancy, France

⁶Laboratory for the Analysis of Posture, Equilibrium and Motor Function (LAPEM), University Hospital of Nancy, Vandoeuvre-les-Nancy, France
Georges Dumas

¹EA 3450 DevAH, Development, Adaptation and Handicap, Faculty of Medicine and UFR STAPS, University of Lorraine, Villers-les-Nancy, France

⁷Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Hospital, Grenoble, France

Abstract

Background Pediatric oculomotor function can be evaluated via videonystagmography. Adult normative data for saccades and smooth pursuit tests cannot be used as a benchmark for pediatric patients because children's peripheral and central systems continue to mature throughout adolescence.

Purpose The purpose of this study was to establish normative data for saccade and smooth pursuit tests that can be used clinically in the assessment of vestibular and neurological disorders in children, and to investigate the effect of age and eye movement direction (left/right) on tests parameters.

Research Design The present study is prospective cross-sectional study.

Study Sample A total of 120 healthy children were recruited and equally distributed according to age and gender to each of the following groups: 5-8, 9-11, 12-14, and 15-17 years old. Participants had to pass a comprehensive otological and neurological assessment prior to inclusion in the study. Each subject underwent saccade and smooth pursuit testing.

Data Collection and Analysis Saccade latency, velocity and accuracy/precision, and smooth pursuit gain were analyzed across groups using a two-way repeated measure multivariate analysis of variance (MANOVA).

Results Saccadic latency was longer in the youngest group aged 5-8 years old (305 ± 48 msec) in comparison to children aged 9-11 years old (276 ± 22 msec) (P = 0.017), 12-14 years old (252 ± 34 msec) (P = 0.001) adolescents 15-17 years (256 ± 33 msec) (P = 0.001). Age did not affect the results of saccadic velocity and accuracy/precision. Saccade parameters (latency, velocity, accuracy/ precision) were not affected by oculomotor direction (left vs. right). Smooth pursuit gain increased from 0.63 in children aged 5-8 years old to 0.85 in children aged 15-17 years (P = 0.0001). The percentage of gain asymmetry was significantly different in the youngest two groups.

Conclusion Saccade latency decreased as age increased. Smooth pursuit gains increased with increased age. Saccade velocity and accuracy/precision did not change significantly from ages 5-8 to 15-17 years of age. These data provide normative values for pediatric oculomotor evaluation and suggest that saccade and pursuit pathways may mature at different rates.

Keywords

maturation - pediatric - saccade - smooth pursuit - videonystagmography

Full Text

References

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