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Repeatability and Reproducibility of a Saccadic Eye Movement Time Test
Antonio Ríder-Vázquez1, Estanislao Gutiérrez-Sánchez2, Daniel Velasco-Olea3
1Department of Physics of Condensed Matter (Optics Area), University of Seville, Reina Mercedes S/N, 41012 Seville, Spain.
Journal of Clinical Medicine
|October 29, 2025
Summary
This study assessed saccadic duration measurement repeatability using COI-SV® software. While interexaminer reliability was fair to good, intraexaminer repeatability was poor, suggesting more validation is needed for clinical use.
Area of Science:
- Ophthalmology
- Sports Vision
- Human Physiology
Background:
- Objective saccadic duration assessment is vital in sports vision.
- Standardized clinical tools for this are limited.
- COI-SV® software's reliability for saccadic time measurement requires evaluation.
Purpose of the Study:
- Evaluate intraobserver and interobserver repeatability of saccadic duration measurements using COI-SV® software.
- Analyze the influence of age and sex on saccadic duration.
- Determine the clinical utility of the COI-SV® software for saccadic analysis.
Main Methods:
- 78 participants underwent saccadic duration testing with a 20/40 Snellen letter stimulus.
- Measurements were taken in four directions and two distances, recording shortest response times.
- Repeatability was assessed via four test repetitions; age and sex effects were analyzed using ANCOVA and Pearson correlation.
Main Results:
- No significant sex-based differences in saccadic duration were found.
- Saccadic duration showed a positive correlation with age (p < 0.05).
- Intraexaminer repeatability was poor, while interexaminer reproducibility ranged from fair to good.
Conclusions:
- COI-SV® software demonstrates moderate to good interexaminer reliability for saccadic duration.
- Intraexaminer repeatability was poor to acceptable, indicating a need for further refinement.
- The software requires additional validation before widespread clinical implementation in sports vision.
