Visual dysfunction is underestimated in patients with acquired brain injury

Area of Science:

• Neuroscience
• Ophthalmology
• Rehabilitation Medicine

Background:

• Vision is crucial for cerebral function, with over 50% of brain activity dedicated to it.
• Visual impairments frequently occur post-acquired brain injury (ABI) but are often underestimated.
• Early identification of visual deficits is vital for effective patient rehabilitation.

Purpose of the Study:

• To determine the prevalence of visual impairments in an Out-patient Brain Injury Program.
• To assess the utility of a structured screening questionnaire for identifying visual deficits.
• To understand how visual symptoms correlate with patient demographics and diagnoses.

Main Methods:

• Administered the Visual Interview, an 18-question screening tool, to 170 acquired brain injury patients.
• The Visual Interview was conducted upon admission to the Out-patient Brain Injury Program.
• Compared the types of visual impairment based on sex and diagnosis.

Main Results:

• 54% of patients reported experiencing visual changes, including reading difficulties, photosensitivity, blurred vision, and visual field disorders.
• A subset of patients (16) reported visual symptoms despite not initially perceiving vision problems.
• Minimal variations in visual symptom occurrence were observed concerning sex or diagnosis.

Conclusions:

• Visual impairments are highly prevalent following acquired brain injury.
• Patients may not always recognize or report their visual problems as vision-related.
• A structured questionnaire effectively aids rehabilitation teams in assessing visual changes post-brain injury.