Vergence dysfunction in mild traumatic brain injury (mTBI): a review

Area of Science:

• Ophthalmology
• Neuroscience
• Vision Science

Background:

• Vergence eye movements are crucial for binocular vision, enabling single, fused perception of objects in depth.
• Neurological control of vergence is complex and susceptible to disruption following traumatic brain injury (TBI).
• Vergence dysfunctions are common after TBI, often manifesting as near-work symptoms like reading difficulties.

Purpose of the Study:

• To review the vergence system and its anomalies in the context of mild traumatic brain injury (mTBI).
• To discuss the diagnostic and therapeutic clinical ramifications of these vergence dysfunctions.
• To consider implications for brain imaging and neuroplasticity research in mTBI patients.

Main Methods:

• Literature review of scientific articles and clinical studies.
• Analysis of research on the neurobiology of vergence control.
• Synthesis of findings on mTBI-related oculomotor deficits.

Main Results:

• mTBI frequently compromises the neurological mechanisms controlling vergence.
• A range of vergence dysfunctions are observed in mTBI patients, impacting visual function.
• These dysfunctions contribute to significant near-work symptoms, including reading impairments.

Conclusions:

• Vergence system anomalies are a significant clinical issue following mTBI.
• Accurate diagnosis and targeted therapies are essential for managing these visual dysfunctions.
• Further research into brain imaging and neuroplasticity may offer new insights for treatment.