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Development of a mild traumatic brain injury-specific vision screening protocol: a Delphi study.
Gregory L Goodrich1, Gary L Martinsen, Heidi M Flyg
1VA Palo Alto Health Care System, 795 Willow Rd, Bldg T-365, Menlo Park, CA 94025. Gregory.Goodrich@va.gov.
This study developed a standardized vision screening protocol for patients who have experienced a mild traumatic brain injury. By gathering expert input from optometrists, researchers created a list of history questions and physical examination steps to help eye care providers better identify and manage vision-related symptoms.
Area of Science:
- Ophthalmology and vision science research within mild traumatic brain injury diagnostics
- Clinical practice guidelines development in neuro-optometry
Background:
No standardized vision screening protocol currently exists for patients recovering from mild traumatic brain injury. Prior research has shown that these individuals frequently report persistent oculomotor and visual disturbances. Such impairments often hinder the performance of routine daily tasks like reading or navigating complex environments. While many eye care professionals possess general clinical expertise, they may lack specific experience with this patient population. That uncertainty drove the need for a consensus-based approach to standardize care across military and civilian settings. Previous studies highlighted that inconsistent diagnostic practices can delay effective rehabilitation for affected individuals. This gap motivated the development of a structured clinical tool to assist practitioners in identifying these specific visual deficits. The current work addresses this by synthesizing expert knowledge into a practical, uniform screening framework.
Purpose Of The Study:
The aim of this study was to develop a standardized vision screening protocol specifically for patients with a history of mild traumatic brain injury. Researchers sought to address the lack of uniform diagnostic procedures for these individuals. Many clinicians encounter difficulties when assessing visual and oculomotor problems in this population. This project was motivated by the need to improve the quality of care provided by eye care professionals. The team recognized that varying levels of experience among providers could lead to inconsistent patient outcomes. By creating a structured tool, the authors intended to provide a reliable resource for both military and civilian settings. The process focused on identifying the most relevant history questions and examination steps through expert consensus. This initiative ultimately strives to ensure that every patient receives optimal and consistent vision care following their injury.
Main Methods:
The investigators employed a modified Delphi method to achieve consensus among a panel of sixteen optometrists. This review approach involved structured rounds of feedback to refine the clinical content. Participants evaluated potential history questions and physical examination procedures based on their professional experience. The design focused on capturing expert insights to address the lack of standardized protocols. Researchers systematically aggregated responses to ensure the final tool reflected high levels of professional agreement. This process prioritized the selection of items that are both practical and effective for clinical use. The team excluded procedures that did not reach the required threshold of expert consensus. This rigorous methodology ensured that the resulting guidelines were both evidence-informed and clinically relevant for diverse eye care settings.
Main Results:
The study successfully produced a clinical tool containing seventeen history questions and seven specific examination procedures. This outcome represents the consensus reached by the sixteen-member panel of expert optometrists. The findings demonstrate that a structured approach can effectively organize the visual assessment of patients with a history of mild traumatic brain injury. The researchers identified these specific components as the most valuable elements for a screening protocol. This framework provides a standardized set of guidelines for practitioners to follow during patient encounters. The results indicate that these procedures can function as a primary screen or as a supplement to comprehensive eye exams. This consensus-based tool addresses the identified need for uniform care across military and civilian practices. The data support the utility of this protocol in enhancing the diagnostic process for clinicians with varying levels of experience.
Conclusions:
The researchers synthesized expert consensus to establish a structured vision screening tool for patients with mild traumatic brain injury. This protocol includes seventeen history questions and seven distinct examination procedures for clinical use. The authors propose that this framework serves as a flexible resource for diverse eye care providers. Practitioners may utilize these guidelines as a standalone screen or as a supplement to comprehensive eye examinations. This synthesis implies that uniform diagnostic criteria can improve the consistency of care for this patient group. The study suggests that such tools help bridge the experience gap among clinicians treating these specific injuries. These findings provide a foundation for future efforts to standardize visual assessment practices in clinical settings. The authors conclude that this consensus-based approach supports optimal vision care delivery for patients with a history of mild traumatic brain injury.
Frequently Asked Questions
The researchers propose a clinical tool comprising seventeen history questions and seven examination procedures. This protocol assists eye care providers in identifying visual deficits following a mild traumatic brain injury, serving either as a primary screening instrument or as an adjunct to a full clinical evaluation.
The authors utilized a modified Delphi method to gather expert opinions from a panel of sixteen optometrists. This systematic consensus-building approach allowed for the integration of diverse clinical perspectives to define the most relevant visual examination components for patients with a history of mild traumatic brain injury.
The authors indicate that this protocol is necessary because many eye care providers lack specialized experience in treating patients with mild traumatic brain injury. Standardizing these procedures ensures that practitioners can provide uniform, high-quality care regardless of their previous exposure to this specific patient population.
The researchers relied on expert consensus data derived from the Delphi panel. This qualitative information served as the foundation for selecting the seventeen history questions and seven examination procedures, ensuring the final tool reflects the collective clinical judgment of experienced optometrists.
The study measures the consensus among optometrists regarding the most effective visual examination procedures. This phenomenon of expert agreement allowed the researchers to identify specific history questions and physical tests that are most relevant for detecting visual dysfunction in patients with a history of mild traumatic brain injury.
The researchers propose that this tool facilitates optimal and uniform vision care for patients with mild traumatic brain injury. By providing a structured set of guidelines, the protocol aims to improve the consistency of diagnostic practices across various military and civilian clinical settings.

