Journal of optometry · 2025
Saccadic eye movements in childhood: A pilot study comparing clinical eye tracker software and the NSUCO.
СтатьяСравнительное исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Bilbao Carmen, Carrera Alba, Hernández-Andrés Rosa, Piñero David P, Remón Martín Laura, López-de-la-Fuente María José, Casanovas-Marsal Josep-Oriol
Аннотация
PURPOSE: To explore differences in saccadic eye movements between children with oculomotor dysfunction and those in a control group across three age groups, using two assessment methods: the subjective Northeastern State University College of Optometry (NSUCO) Oculomotor test and objective analysis with the Tobii Eye X Eye Tracker (Tobii Eye X, Tobii, Stockholm, Sweden).
METHODS: This study included 31 children (ages 7-13) diagnosed with oculomotor dysfunction and 16 age-matched children in the control group. Participants were divided into three age groups: group 1 (7-8 years), group 2 (9-11 years), and group 3 (12-13 years). Saccadic eye movements were evaluated and compared using two methods: the NSUCO test and the Tobii Eye X eye tracker, along with specialized software analysis (Thomson Software Solutions, Welham Green, UK) RESULTS: Children in the oculomotor dysfunction group obtained significantly lower NSUCO scores (p < 0.001) compared to the control group. Regarding eye tracking analyses, a significantly higher number of hypometric saccades were found in oculomotor dysfunction group (p ≤ 0.044). Additionally, in this group a significantly higher percentage of regressions was observed for a 1-second stimulus presentation interval (p = 0.012). Significant correlations were found between different NSUCO scores and the percentage of regressions, the number of completed saccades and the number of hypometric saccades.
CONCLUSION: The presence of hypometric saccades and regressions appears to be a distinguishing characteristic of children with oculomotor dysfunction, detectable through both objective eye tracking analysis and the subjective NSUCO test, which can be easily implemented in clinical settings.
METHODS: This study included 31 children (ages 7-13) diagnosed with oculomotor dysfunction and 16 age-matched children in the control group. Participants were divided into three age groups: group 1 (7-8 years), group 2 (9-11 years), and group 3 (12-13 years). Saccadic eye movements were evaluated and compared using two methods: the NSUCO test and the Tobii Eye X eye tracker, along with specialized software analysis (Thomson Software Solutions, Welham Green, UK) RESULTS: Children in the oculomotor dysfunction group obtained significantly lower NSUCO scores (p < 0.001) compared to the control group. Regarding eye tracking analyses, a significantly higher number of hypometric saccades were found in oculomotor dysfunction group (p ≤ 0.044). Additionally, in this group a significantly higher percentage of regressions was observed for a 1-second stimulus presentation interval (p = 0.012). Significant correlations were found between different NSUCO scores and the percentage of regressions, the number of completed saccades and the number of hypometric saccades.
CONCLUSION: The presence of hypometric saccades and regressions appears to be a distinguishing characteristic of children with oculomotor dysfunction, detectable through both objective eye tracking analysis and the subjective NSUCO test, which can be easily implemented in clinical settings.