Reading eye movements in traumatic brain injury
The aim of this study was to measure the reading eye movements in subjects with traumatic brain injury (TBI) using ReadAlyzer. ReadAlyzer is an objective eye movement recording device that tracks the eye movements while reading. Reading eye movements were measured using ReadAlyzer in 30 subjects wit...
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| Published in: | Journal of optometry Vol. 13; no. 3; pp. 155 - 162 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier España, S.L.U
01-07-2020
Elsevier |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The aim of this study was to measure the reading eye movements in subjects with traumatic brain injury (TBI) using ReadAlyzer. ReadAlyzer is an objective eye movement recording device that tracks the eye movements while reading.
Reading eye movements were measured using ReadAlyzer in 30 subjects with TBI (mild, moderate and severe) who had binocular vision and reading related symptoms and 60 asymptomatic controls.
There was a significant decrease in reading eye movement parameters in subjects with TBI compared to controls. Reading eye movement parameters are represented in median and interquartile range (IQR). Subjects with TBI presented with an increased number of fixations/100 words (median 137, IQR 106–159) and regressions/100 words (24, 12–36), and reduced reading rate (154, 128–173) words per minute. They also had a lesser grade level equivalent (4.0, 3.0–7.0) and reduced comprehension (70, 60–80) percentage compared to controls (Mann–Whitney U test, p<0.05). Reading eye movement parameters were also significantly affected in mild and moderate-severe TBI subjects compared to controls (Kruskal–Wallis test, p<0.05).
Reading eye movement performance using ReadAlyzer was found to be decreased in traumatic brain injury. Reading assessment may serve as a clinical measure to understand the oculomotor system following TBI.
El objetivo de este estudio fue medir los movimientos oculares durante el proceso de lectura en sujetos con lesión cerebral traumática (TBI) utilizando ReadAlyzer, un dispositivo de registro objetivo del movimiento del ojo, que rastrea los movimientos oculares durante la lectura.
Se midieron los movimientos oculares durante la lectura utilizando ReadAlyzer en 30 sujetos con TBI (leve, moderada y grave) con síntomas relacionados con la vision binocular y la lectura, así como en 60 controles asintomáticos.
Se produjo una disminución significativa de los parámetros del movimiento ocular durante la lectura en los sujetos con TBI, en comparación con los controles. Los parámetros del movimiento ocular durante la lectura se representan como mediana y rango intercuartílico (IQR). Los sujetos con TBI presentaron un incremento del número de fijaciones /100 palabras (137, 106–159) y regresiones/100 palabras (24, 12–36), así como una reducción de la tasa de lectura (154, 128–173) palabras por minuto. También reflejaron un menor grado de equivalencia de nivel (4, 3–7) y una reducción de la comprensión (70, 60–80) porcentual, en comparación con los controles (prueba U de Mann–Whitney, p<0,05). Los parámetros del movimiento ocular durante la lectura se vieron también significativamente afectados en los pacientes de TBI leve y moderada-severa, en comparación con los controles (prueba de Kruskal–Wallis, p<0,05).
Se observó un descenso del desempeño del movimiento ocular durante la lectura, utilizando ReadAlyzer, en las lesiones cerebrales traumáticas. La evaluación de la lectura puede servir como medida clínica para comprender el sistema oculomotor tras una lesión cerebral traumática. |
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| Bibliography: | Present Address: School of Optometry & Vision Science, University of New South Wales, Sydney. |
| ISSN: | 1888-4296 1989-1342 |
| DOI: | 10.1016/j.optom.2019.10.001 |