RT Journal Article
T1 Repeatability and reproducibility of a saccadic eye movement time test
A1 Ríder Vázquez, Antonio
A1 Gutiérrez Sánchez, Estanislao
A1 Velasco Olea, Daniel
A1 Martínez Pérez, Clara
A1 Sánchez González, María Carmen
K1 Saccadic eye movements
K1 Sports vision
K1 Intra- and interexaminer repeatability
K1 Visual performance
K1 Optometry
AB Background/Objectives: Reliable and objective assessment of saccadic duration is crucial in sports vision, yet standardized clinical tools remain scarce; therefore, this study evaluated the intraobserver and interobserver repeatability of saccadic time measurements using COI-SV® software, and analyzed the influence of age and sex. Methods: Saccadic duration was assessed in 78 participants using a 20/40 Snellen letter stimulus appearing in four directions (up, down, left, right) at two distances. The shortest response time per direction was recorded. General mean values (total, vertical, horizontal, short, long, and ratios) were calculated. Repeatability was evaluated through a protocol of four test repetitions (two intrasession and two intersession with different examiners). ANCOVA and Pearson correlation assessed sex and age effects. Repeatability indices and Bland–Altman plots were used to determine agreement. Results: Regarding sex, there were no significant differences between men and women. Saccadic duration showed a direct relationship with age (p < 0.05), indicating that older participants had worse saccadic time values (longer times). Overall, intraexaminer repeatability was poor, whereas interexaminer reproducibility was between fair and good. Bland–Altman analysis showed limits of agreement ranging from −159.0 to 220.3 milliseconds (ms) for specific time values and from −87.0 to 122.52 ms for general values, which may be useful in clinical practice. Conclusions: The study shows that the COI-SV® software provides moderate to good interexaminer reliability and poor to acceptable intraexaminer repeatability of saccadic duration measurements, indicating that further refinement and validation are needed before considering clinical implementation
PB MDPI
YR 2025
FD 2025-10-11
LK https://hdl.handle.net/10347/45769
UL https://hdl.handle.net/10347/45769
LA eng
NO Ríder-Vázquez, A., Gutiérrez-Sánchez, E., Velasco-Olea, D., Martinez-Perez, C., & Sánchez-González, M. C. (2025). Repeatability and Reproducibility of a Saccadic Eye Movement Time Test. Journal of Clinical Medicine, 14(20), 7170. https://doi.org/10.3390/jcm14207170
DS Minerva
RD 24 abr 2026