Introduction
Acquired Brain Injury (ABI) often leaves behind a complex trail of sensory challenges, with visual impairment being among the most prevalent yet frequently overlooked. Traditional eye exams may capture clinical acuity, but they often miss the practical, day-to-day functional struggle of the patient. To bridge this gap, Lauren R. Hepworth, Fiona J. Rowe, and their colleagues at the Institute of Population Health, University of Liverpool, developed the Brain Injury Associated Visual Impairment Impact Questionnaire (BIVI-IQ) in 2023. Designed specifically for the neuro-rehabilitation context, the BIVI-IQ provides a systematic way to quantify how visual deficits—ranging from processing issues to peripheral field loss—interfere with a patient's life. Despite its recent publication (only 5 citations on google scholar at the time of writing this article), it is already gaining traction in neuro-ophthalmology for its ability to center the patient’s subjective experience.
This guide offers an expert overview of the BIVI-IQ, its structure, and its critical role in modern ABI rehabilitation.
Key Features of the Brain Injury Associated Visual Impairment Impact Questionnaire (BIVI-IQ)
Purpose and Use
The primary goal of the BIVI-IQ is to identify and address vision-related functional deficits in patients who have sustained an Acquired Brain Injury. Moreover, it serves as a Patient-Reported Outcome Measure (PROM), moving beyond clinical measurements to understand the real-world impact of vision loss on a person's quality of life and rehabilitation outcomes.
Target Population
The questionnaire targets adults (18+) who have suffered an ABI. This includes:
Young adults (18-24 years)Middle-aged adults (25-44 years)Older adults (45-64 years)Seniors (65+ years)Structure
The BIVI-IQ is a concise 13-item instrument. These items are strategically grouped into four functional domains to ensure comprehensive coverage of the patient's visual experience:
Reading and Visual Processing (Items 1-4): Evaluates difficulties with tasks requiring sustained visual focus and the processing of detailed information.Mobility and Navigation (Items 5-8): Focuses on the safety of movement and the ability to interact with the environment without hitting obstacles.Activities of Daily Living (ADLs) (Items 9-11): Covers the impact of vision on routine personal care and household tasks.Visual Field and Attention (Items 12-13): Evaluates peripheral awareness and light sensitivity, both of which are critical for safe environmental interaction.Scoring Method
The tool utilizes a straightforward 4-point Likert scale to measure the degree of functional impact:
0 points: No difficulty.1 point: Some difficulty.2 points: A lot of difficulty.3 points: Unable to do.To calculate the results, the scores for all 13 items are summed, creating a Total Score Range of 0–39. A higher score indicates a more severe functional impact from the visual impairment.
Administration Format
One of the BIVI-IQ's greatest clinical advantages is its efficiency, typically requiring less than 5 minutes to complete. It is highly flexible and is available in the following formats:
Paper-based formsDigital (online) platformsMobile AppIn‑person interviewsPhone/Video CallIt is self-administered and requires no specialized training for the patient to fill out or for the clinician to facilitate.
Applications of the Brain Injury Associated Visual Impairment Impact Questionnaire (BIVI-IQ)
The BIVI-IQ is an essential tool across various professional domains:
Screening: Quickly identifying patients who need specialized neuro-ophthalmological referrals.Monitoring: Tracking changes in functional vision over the course of a rehabilitation program.Treatment planning: Providing specific data points (e.g., mobility vs. reading) to personalize a patient’s rehab strategy.Research: Serving as a validated, ABI-specific outcome measure for clinical trials and longitudinal studies.Languages and availability
The BIVI-IQ is currently available in English. While it is free to use for clinical practice and research, it is considered a restricted access tool. Users must apply for permission to access the official resources and manual through the University of Liverpool.
Reliability and Validity
Despite being a newer tool, the BIVI-IQ is Highly Reliable/Valid. It boasts an impressive Cronbach's alpha of 0.95, indicating exceptional internal consistency. Validation studies have confirmed its face validity and utility in capturing the nuances of vision-related impairment following brain injury.
Original validation study linkFace validity study linkLimitations and Considerations
Practitioners should keep the following constraints in mind:
Self‑report measure: As a PROM, the data is subjective and may be influenced by the patient's current emotional state or cognitive awareness.Cultural and Language Barriers: It is currently validated primarily in English, which may limit its use in diverse global populations.Limited Validation Studies: Being a relatively recent instrument (2023), it currently has a limited number of external validation studies.Social Desirability Bias: Patients may under-report or over-report difficulties based on their perception of the clinical setting.Other Versions And Related Questionnaires
While there are no other versions (such as short forms) of the BIVI-IQ, researchers usually use it alongside other visual function tools:
The National Eye Institute Visual Function Questionnaire (NEI VFQ-25).The Impact of Vision Impairment Questionnaire (IVI).The Visual Function Index (VF-14).Additional Resources
A direct link to the Original Validation Study.You can access the tool as a PDF file through this link.For more information, you may refer to the BIVI-IQ web page hosted on the Liverpool University website using this link, or you can contact the author using the following E-mail: hepworth@liverpool.ac.uk.Frequently Asked Questions (FAQ)
Who can use the BIVI-IQ ?Researcher and clinicians working with adults aged 18 and older who suffer from an Acquired Brain Injury (ABI).
How long does it take to complete the BIVI-IQ ?It usually takes less than 5 minutes.
How is the BIVI-IQ administered?Healthcare teams can administer the instrument via paper-based forms, digital/online platforms, in-person interviews, video calls or mobile apps.
Is there any cost to using the BIVI-IQ ?It is a restricted access tool, which means that it is free for clinical and research use, though permission is required for official access.
A Word from ResRef about the Brain Injury Associated Visual Impairment Impact Questionnaire (BIVI-IQ)
This meticulously validated tool fills a critical gap by quantifying the real-world functional impact of visual impairments following brain injury. Its concise 13-item design offers exceptional clinical utility, enabling efficient patient assessment without sacrificing psychometric rigor. By centering the patient's perspective, it provides invaluable data that directly informs and personalizes rehabilitation strategies. The BIVI-IQ stands as an essential, patient-centered outcome measure that elevates both clinical practice and research in the field. We endorse it as a premier instrument for achieving superior patient outcomes.
References
Hepworth, L. R., Kirkham, J. J., Perkins, E., Helliwell, B., Howard, C., Liptrot, M., Tawana, S., Wilson, E., & Rowe, F. J. (2024). Validation of the brain injury associated visual impairment - impact questionnaire (BIVI-IQ). Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation, 33(3), 777–791. LinkHepworth, L. R., Kirkham, J. J., & Rowe, F. J. (2023). Face validity and utility of the Brain Injury associated Visual Impairment Impact Questionnaire (BIVI-IQ). Investigative Ophthalmology & Visual Science, 64(8), 5054. Link