The Injury Everyone Misses After a Car Accident — And the Simple Eye Test That Finds It

Published by TriMed Spine & Joint — Boca Raton, Delray Beach, Lauderhill & Hollywood, FL

Quick summary: Concussions are among the most commonly missed injuries after a car accident. You don’t have to hit your head, and you don’t have to black out — the whip-like force of a collision alone can injure the brain, and symptoms often don’t appear for days. At TriMed Spine & Joint, we screen crash patients with the EyeBOX®, an FDA-cleared eye-tracking device that objectively detects the eye-movement abnormalities concussion causes — with no baseline test, no needles, and no radiation.

Why Head Injuries Get Overlooked After a Crash

Think about what happens in the hours after an accident. Police reports. Tow trucks. Insurance calls. Adrenaline is surging — which literally masks pain and symptoms. If you go to the ER, their job is to rule out life-threatening emergencies: a CT scan checks for bleeding and fractures, it comes back clean, and you’re discharged.

Here’s the problem: a normal CT scan does not rule out a concussion. CT shows structure — bleeding, broken bone. Concussion is a functional injury: the brain’s wiring is disrupted, not its architecture. Structure looks fine; function isn’t.

Three more reasons concussions slip through the cracks:

1. No head impact required. The same acceleration-deceleration force that whips your neck also moves your brain inside your skull. You can sustain a concussion without your head touching anything.
2. No blackout required. Most concussions involve no loss of consciousness at all. “I never got knocked out” is not the same as “I’m not concussed.”
3. Symptoms hide behind whiplash. Headache, dizziness, neck pain, trouble sleeping — concussion and whiplash share symptoms, so one routinely hides behind the other unless a provider screens for both.

The Symptoms People Write Off as “Stress”

Concussion symptoms typically surface 24–72 hours after the crash — sometimes later. Patients tell us things like “I figured I was just shaken up.” Watch for:

1. Headaches that linger or worsen
2. Brain fog — trouble concentrating, forgetting words, losing your train of thought
3. Sensitivity to light or noise
4. Dizziness or balance problems
5. Irritability, anxiety, or mood changes that feel “not like you”
6. Unusual fatigue or disrupted sleep

Red flags are different. A headache that keeps getting worse, repeated vomiting, slurred speech, unusual confusion or drowsiness, weakness or numbness, or one pupil larger than the other — those mean emergency room, immediately.

What Is the EyeBOX?

For decades, concussion assessment relied on subjective tools: symptom checklists you fill out yourself, and the clinical equivalent of “follow my finger.” Both depend on what the patient reports and what the examiner’s eye can catch.

The EyeBOX®, made by Oculogica, changed that. It’s an FDA-cleared eye-tracking device — the first cleared as an aid in diagnosing concussion that requires no pre-injury baseline test. That distinction matters enormously after a car accident: athletes get preseason baseline tests, but nobody has a “before the crash” measurement on file. The EyeBOX doesn’t need one.

How the EyeBOX Test Works

The science is elegant. Concussion disrupts the cranial nerves that control your eye movements — in ways too subtle for a human examiner to see, but not too subtle for a high-speed camera.

Here’s the entire test from the patient’s side:

1. You sit down and rest your chin and forehead on a comfortable support, like at the eye doctor.
2. You watch a short video that moves slowly around the edge of a screen. That’s your whole job.
3. A high-speed infrared camera just below the screen records your eye positions hundreds of times per second — hundreds of thousands of data points in one sitting.
4. The device’s algorithm analyzes your eye movements for the specific abnormalities concussion produces and generates a BOX Score, an objective measurement compared against an age- and gender-normalized population.
5. Your provider interprets the score alongside a clinical neurological exam to reach a diagnosis.

No needles. No radiation. No effort, no test anxiety, nothing to “pass or fail.” Just watching a screen.

Why Objective Testing Changes Everything

The BOX Score is based purely on measured eye movement — no symptom self-reporting goes into it. That matters in both directions:

1. It catches the stoics. Plenty of patients minimize symptoms — they want to get back to work, they don’t want to seem fragile, they genuinely believe they’re fine. Their eye movements tell the truth anyway.
2. It documents objectively. After an accident, your medical record matters. An FDA-cleared, machine-measured result is objective documentation of your injury — not just a checklist of what you said you felt.
3. It tracks recovery. The EyeBOX is also cleared to help monitor concussion recovery over time, so follow-up testing can show measurable improvement rather than guesswork about when you’re truly healed.

Who Needs EyeBOX Testing?

The EyeBOX is FDA-cleared for patients ages 5 through 67, so children and adults from the same crash can both be screened. We recommend testing for:

1. Anyone with post-crash symptoms — headaches, fog, dizziness, light sensitivity, mood or sleep changes — even if they started days after the accident.
2. Anyone who hit their head or was violently jolted but “feels fine.” Objective screening can flag dysfunction before symptoms catch up.
3. Parents and children from the same collision. Kids are notoriously poor at reporting concussion symptoms; an objective test doesn’t rely on their self-description.
4. Patients already diagnosed with a concussion who need recovery monitored before returning to work, school, or sports.

The EyeBOX is a diagnostic aid used together with a clinical exam — not a standalone test — and anyone with red-flag symptoms belongs in the emergency room first, every time.

Frequently Asked Questions

Can I have a concussion without hitting my head?

Yes. The rapid acceleration-deceleration of a crash can cause the brain to move within the skull — no impact and no loss of consciousness required.

I had a normal CT scan at the ER. Doesn’t that mean I’m fine?

A normal CT rules out bleeding and fractures — emergencies. It does not rule out concussion, which is a functional injury that CT can’t see. That’s the gap EyeBOX screening fills.

Does the EyeBOX test hurt?

No. You simply watch a video while a camera tracks your eyes. Non-invasive, no needles, no radiation.

Do I need a baseline test from before my accident?

No. The EyeBOX is specifically designed to work without any pre-injury baseline — your results are compared against a normalized population instead.

Can my child be tested?

Yes. The EyeBOX is FDA-cleared for ages 5 through 67.

Is EyeBOX testing covered after a car accident?

In Florida, medically necessary crash-injury evaluation is generally billable under your PIP coverage. Remember that Florida’s 14-day rule requires initial medical care within 14 days of the accident to preserve your PIP benefits — another reason not to wait on symptoms. Our staff verifies your coverage before testing.

Hit Your Head — or Just Not Feeling Like Yourself Since the Crash?

Don’t write it off as stress. TriMed Spine & Joint offers EyeBOX® concussion screening as part of our comprehensive auto accident evaluations at four South Florida locations — Boca Raton, Delray Beach, Lauderhill, and Hollywood — alongside chiropractic, interventional pain management, and orthopedic spine care under one roof.

Call (855) 487-4633 or request an appointment online.

Medical disclaimer: This article is for general educational purposes and is not medical advice. The EyeBOX is an FDA-cleared aid in the diagnosis of concussion used in conjunction with a standard clinical neurological assessment; it is not a standalone diagnostic. Individual situations vary; consult a licensed provider about your specific condition. Pursuant to Florida law, the patient and any other person responsible for payment has a right to refuse to pay, cancel payment, or be reimbursed for payment for any other service, examination, or treatment that is performed as a result of and within 72 hours of responding to an advertisement for a free, discounted fee, or reduced fee service, examination, or treatment (§ 456.062, Fla. Stat.).