The Centers for Disease Control and Prevention (CDC) estimates that 1.4 to 3.8 million sports-related mild traumatic brain injuries (mTBI) occur annually in the United States. This figure only represents reported incidents—countless other concussions go undiagnosed or are evaluated solely in outpatient settings.
Sustaining just one concussion during a sports season increases an athlete’s risk of a second concussion by three times. Because repeat injuries can lead to severe, prolonged neurological deficits, fast and accurate diagnostic testing is critical. Yet, one of the most common and lingering symptoms of a concussion is frequently left out of standard evaluations: visual dysfunction.
How Concussions Impact the Visual System
More than 50% of the brain’s neural pathways are involved in visual processing and oculomotor control. When a brain injury occurs, these complex networks are easily disrupted, leading to symptoms that extend far beyond simple blurry vision.
Concussions frequently affect how the eyes work together and communicate with the brain, causing issues such as:
Convergence Insufficiency: Difficulty pulling the eyes inward to focus on close objects, leading to eye strain and double vision.
Saccadic Dysfunction: Impaired ability to make quick, precise eye movements when switching focus between targets (crucial for reading and track-and-field sports).
Smooth Pursuit Deficits: Inability to smoothly track a moving object with the eyes without moving the head.
Photosensitivity & Visual Overload: Heightened sensitivity to bright lights, screens, and busy visual environments.
Why Traditional Sideline Concussion Screening Misses Vision Issues
Standard sideline assessments—such as basic memory prompts, physical balance checks, or symptom self-reporting—often fail to detect subtle visual tracking impairments. An athlete may feel capable of answering basic cognitive questions, yet still suffer from impaired eye-brain coordination that severely hinders their reaction time and spatial awareness.
Researchers and clinical experts strongly advocate for adding objective visual assessments to current sideline testing protocols. Evaluating oculomotor function immediately following a suspected impact significantly improves diagnostic sensitivity and reduces the likelihood of sending an athlete back into play prematurely.
What the Research Says About Visual Diagnostic Testing
Visual screening tools—such as the King-Devick test and the Vestibular/Ocular-Motor Screening (VOMS) tool—have proven highly effective in identifying sports-related concussions when paired with traditional assessment methods.
Key Clinical Takeaways:
Enhanced Sensitivity: Incorporating visual tracking tasks into sideline evaluations increases the detection rate of concussions compared to symptom checklists alone.
Recovery Monitoring: Tracking eye-movement improvements provides objective, quantifiable data to evaluate an athlete’s progress throughout neuro-rehabilitation.
Secondary Prevention: Catching subtle vision deficits early prevents athletes from returning to high-risk environments with compromised spatial tracking and slower reaction times.
Read the full article: Vision and Concussion Diagnostic Testing (PDF)
Specialized Neuro-Visual Concussion Evaluation in NYC
At Concussion Management of New York, we recognize that vision is an essential piece of the concussion diagnostic puzzle. We don’t rely on basic eye chart readings; our clinical team performs comprehensive neuro-visual assessments to isolate hidden motor and sensory tracking deficits.
Our post-injury concussion therapy includes:
Targeted Oculomotor Training: Re-establishing smooth pursuit, saccadic movement, and accommodation flexibility.
Vestibular-Ocular Integration: Syncing visual input with the inner ear to eliminate dizziness and spatial orientation issues.
Customized Return-to-Learn & Play Protocols: Ensuring students and athletes can comfortably handle screen time, reading, and sports demands before clearance.
Don’t Overlook Vision in Concussion Recovery
If you or your athlete are experiencing headaches, eye strain, or difficulty focusing after a head impact, a comprehensive visual evaluation is critical. Contact Concussion Management of New York to schedule an expert diagnostic assessment.