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Traumatic Brain Injury l: Introduction

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...

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Development of an Uncomplicated Mild Traumatic Brain Injury Model Modified by Weight-Drop Method and Evidenced by Magnetic Resonance Imaging

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Accommodation in mild traumatic brain injury.

Wesley Green¹, Kenneth J Ciuffreda, Preethi Thiagarajan

¹Department of Vision Sciences, The State University of New York, State College of Optometry, New York, NY 10036 , USA.

Journal of Rehabilitation Research and Development

|July 29, 2010

Summary

Mild traumatic brain injury (mTBI) significantly impairs accommodative function, causing slower responses and reduced amplitude. Comprehensive vision testing is crucial for mTBI patients to address these visual challenges.

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Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury

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Last Updated: Jun 10, 2026

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Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury

Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury

Published on: August 14, 2019

Area of Science:

Ophthalmology
Neuroscience
Vision Science

Background:

Accommodative dysfunction following mild traumatic brain injury (mTBI) negatively affects patient quality of life and rehabilitation.
Understanding the specific visual deficits post-mTBI is critical for effective management.

Purpose of the Study:

To objectively assess accommodative function in adults with mTBI using dynamic and static measurements.
To compare the accommodative responses of mTBI patients with control subjects.

Main Methods:

Utilized a battery of dynamic and static objective laboratory and clinical measurements of accommodation.
Assessed 12 adult patients diagnosed with mTBI (ages 18-40 years).
Compared results against 10 healthy control subjects and normative literature values.

Main Results:

Patients with mTBI demonstrated slowed dynamic accommodative responses and exhibited fatigue effects.
Reduced accommodative amplitude and abnormal accommodative interactions were observed in the mTBI group.
Significant impact of mTBI on accommodative function was evident.

Conclusions:

mTBI substantially impairs both dynamic and static aspects of accommodation.
A comprehensive vision examination including various accommodative tests is recommended for individuals with mTBI.
Addressing accommodative dysfunction is essential for improving functional abilities and rehabilitative outcomes in mTBI patients.