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Reading eye movements in traumatic brain injury
Ashwini V C Reddy1, Revathy Mani2, Ambika Selvakumar3
1Elite School of Optometry, Sankara Nethralaya, Chennai, Tamil Nadu & Birla Institute of Technology and Science, Pilani, Rajasthan, India; Binocular Vision & Neuro-Optometry Clinic, Sankara Nethralaya, Chennai, Tamil Nadu, India; Srimathi Sundari Subramanian Department of Visual Psychophysics, Sankara Nethralaya, Chennai, Tamil Nadu, India.
Reading eye movement analysis using ReadAlyzer revealed significant deficits in individuals with traumatic brain injury (TBI). This objective assessment highlights impaired oculomotor function following TBI.
Area of Science:
- Neuroscience
- Ophthalmology
- Rehabilitation Medicine
Background:
- Traumatic brain injury (TBI) often results in subtle neurological deficits affecting cognitive functions.
- Reading is a complex task reliant on precise oculomotor control and visual processing.
Purpose of the Study:
- To objectively measure reading eye movements in subjects with TBI using the ReadAlyzer device.
- To compare oculomotor performance during reading between TBI patients and healthy controls.
Main Methods:
- Thirty subjects with varying severity of TBI and reading-related symptoms underwent eye movement recording with ReadAlyzer.
- Sixty asymptomatic individuals served as a control group for comparison.
Main Results:
- TBI subjects exhibited significantly more fixations and regressions per 100 words during reading.
- Reduced reading rates, lower grade level equivalents, and decreased comprehension percentages were observed in the TBI group.
- Both mild and moderate-to-severe TBI groups showed significant oculomotor impairments compared to controls.
Conclusions:
- Reading eye movement analysis with ReadAlyzer demonstrates impaired performance in TBI patients.
- Oculomotor assessment during reading may serve as a valuable clinical tool for evaluating TBI-related deficits.
