VOMS Test: Vestibular/Ocular-Motor Screening for Concussion Assessment

TL;DR

• The VOMS test screens for vestibular and ocular-motor impairment after a suspected concussion. It supports assessment but does not diagnose concussion by itself.
• VOMS covers smooth pursuits, horizontal and vertical saccades, near point of convergence, horizontal and vertical vestibulo-ocular reflex, and visual motion sensitivity.
• Clinicians record headache, dizziness, nausea, and fogginess before testing and after each component.
• Common positive cutoffs include a symptom increase of at least 2 points from baseline or a near point of convergence distance of at least 5 cm.
• VOMS belongs in a multi-domain concussion battery alongside balance and cognitive testing.

What VOMS measures and why it belongs in a concussion battery

The VOMS test screens vestibular and ocular-motor function after a suspected concussion. A clinician administers smooth pursuits, saccades, convergence, the vestibulo-ocular reflex, and visual motion sensitivity tasks. Each task tests how the athlete responds to controlled eye movement, target tracking, or head movement.

VOMS belongs alongside balance and cognitive testing because each assessment examines a different functional domain. Balance testing evaluates postural control, while cognitive testing examines functions such as memory and processing speed. An athlete may perform adequately on both yet develop dizziness during head movement or headache while tracking a target. VOMS can detect those task-specific responses that broader concussion measures may miss.

Clinicians score VOMS through symptom provocation and near point of convergence distance. Before testing and after each component, the athlete rates headache, dizziness, nausea, and fogginess. The clinician compares each post-task rating with the athlete’s pretest score to identify symptom increases.

Near point of convergence provides a separate objective measurement. The clinician moves a target toward the athlete and records the distance at which double vision occurs or one eye loses fixation. Symptom changes and convergence distance help identify the affected domain, but VOMS does not diagnose concussion by itself. Clinicians interpret its findings with the history, neurologic examination, balance testing, cognitive assessment, and other relevant clinical information.

The validated cutoffs described here were established for patients ages 9 to 40. Clinicians applying VOMS outside that range should treat results as supportive rather than as validated against population norms.

Administering the five VOMS components

Before testing, record baseline headache, dizziness, nausea, and fogginess on a 0 to 10 scale. Administer the tasks in the validated order under consistent lighting, target distance, and corrective-lens conditions. After each task, record all four symptom ratings and compare them with the pretest baseline. Classify a task as positive when any symptom increases by at least 2 points, while convergence also uses an average near point of convergence cutoff of at least 5 cm.

1. Smooth pursuits

Seat the athlete and hold a small target about 3 feet away at eye level. Move the target smoothly through an approximately 1.5-foot horizontal path, allowing about two seconds in each direction. Complete two full repetitions, then repeat the procedure vertically.

Ask the athlete to follow the target with the eyes while keeping the head still. Record symptoms after completing both planes and apply the 2-point provocation cutoff. Moving the target too quickly can turn a pursuit task into a saccadic task, while holding it too close changes the visual demand.

2. Horizontal and vertical saccades

Place two targets about 3 feet away and approximately 1.5 feet apart. For horizontal saccades, ask the athlete to shift their gaze rapidly between the targets without moving the head. Complete 10 back-and-forth repetitions, record symptoms, and apply the 2-point cutoff.

Reposition the targets vertically while preserving the same viewing distance and separation. Ask the athlete to complete another 10 repetitions, then score symptoms as a separate vertical-saccade task. Monitor head movement closely because an athlete may compensate by turning or nodding rather than moving the eyes independently.

Target spacing and pace should remain consistent across assessments. Targets placed too close together reduce the required eye movement, while an examiner-controlled pace may prevent the athlete from performing the task as quickly as possible.

3. Near point of convergence

Hold a small letter or similar near-vision target at the athlete’s arm length. Move it slowly toward the nose while the athlete maintains focus. Stop when the athlete reports double vision or when you observe one eye lose fixation.

Measure the distance between the target and the tip of the nose at the convergence break. Repeat the measurement three times and calculate the average. Record symptom ratings after the trials.

Apply both VOMS criteria to convergence. A symptom increase of at least 2 points produces a positive symptom-provocation result, and an average near point of convergence distance of at least 5 cm meets the distance cutoff. Use the tip of the nose as the measurement landmark each time because measuring relative to the eye or face changes the recorded distance.

Move the target at a consistent, slow rate and watch the eyes rather than relying entirely on reported diplopia. An athlete may suppress or delay reporting double vision, while visible outward deviation provides an observable break point.

4. Horizontal and vertical vestibulo-ocular reflex

Position a stationary target about 3 feet in front of the seated athlete. For the horizontal vestibulo-ocular reflex task, ask the athlete to keep the eyes fixed on the target while turning the head about 20 degrees in each direction. Use a metronome set to 180 beats per minute and complete 10 repetitions.

Record symptoms immediately, then repeat the task with vertical head movements of about 20 degrees above and below neutral. Record the vertical task separately and apply the 2-point symptom increase cutoff to each plane.

The athlete should keep the target clear while the head moves at the prescribed pace. Slower head movement can reduce vestibular demand, while excessive movement amplitude may provoke symptoms through a different mechanism. Monitor the metronome pace, head excursion, and target distance rather than estimating them between assessments.

5. Visual motion sensitivity

Ask the athlete to stand with the feet about shoulder-width apart, and provide guarding when balance or symptom status warrants it. Have the athlete extend one arm, focus on the thumb, and rotate the head, trunk, and arm together about 80 degrees in each direction. Use a metronome set to 50 beats per minute and complete five full repetitions.

Record symptoms immediately after the task and apply the 2-point provocation cutoff. The eyes should remain fixed on the thumb while the body rotates as one unit. Moving the arm independently, using a small rotation, or exceeding the prescribed pace changes the visual and vestibular load.

Consistent administration supports meaningful comparison across baseline and post-injury assessments. Compare every post-task symptom rating with the original pretest baseline rather than with the preceding task. Document any pause, early termination, altered speed, or reduced movement range because those changes limit direct score comparison.

Baseline VOMS testing across competition levels

Baseline VOMS gives you an athlete-specific reference for interpreting post-injury symptom provocation and near point of convergence. Preseason programs can place VOMS alongside cognitive and balance testing, but clinicians should administer it individually under standardized conditions. Group scheduling can improve throughput, while individual administration preserves control over target distance, movement speed, symptom ratings, and convergence measurement.

High school programs often work with limited athletic training coverage and large preseason testing groups. Schools may divide testing across several sessions or reserve VOMS for athletes in higher-exposure sports. A consistent paper or electronic template reduces missing values and helps different clinicians follow the same sequence.

Collegiate programs can distribute testing across athletic trainers, physical therapists, and sports medicine staff. Batch scheduling remains useful, but the program can assign one clinician to each testing station and enter results into a shared athlete record. Professional programs may have more capacity for one-to-one testing, repeated baselines, and direct integration with existing medical documentation.

Baseline results require clinical context because athletes can report symptoms before any injury. Migraine history, motion sensitivity, fatigue, current illness, and uncorrected visual problems can affect symptom ratings or convergence performance. An athlete may also minimize symptoms to avoid participation restrictions or report symptoms inaccurately after misunderstanding the scale.

Individual comparison helps you separate a meaningful post-injury change from an athlete’s usual response. Population cutoffs still provide interpretive guardrails, especially when no valid baseline exists, but they should not override the athlete’s history or the rest of the concussion examination. When baseline findings appear inconsistent or unusually symptomatic, repeat testing under controlled conditions can produce a more useful reference.

Using post-injury VOMS to guide return-to-sport decisions

Post-injury VOMS findings help determine whether an athlete can tolerate a graded increase in activity. Compare each result with a valid preseason baseline when available. Without baseline data, use the established normative cutoffs and interpret them alongside the broader clinical examination. VOMS should support return-to-sport decisions, not serve as a stand-alone clearance test.

Repeat testing can show whether vestibular and ocular-motor function improves as activity increases. Reduced symptom provocation and normalized convergence support continued progression when other concussion findings also improve. Persistent or worsening provocation suggests that the athlete may need to pause at the current stage while the clinician reassesses contributing deficits.

Persistent VOMS abnormalities can support referral for a focused vestibular or vision evaluation. For example, ongoing provocation during vestibulo-ocular reflex or visual motion sensitivity tasks may indicate impaired gaze or motion tolerance. Abnormal convergence may warrant further assessment of binocular vision and referral based on the clinician’s examination and local care pathway.

Symptom-based rest alone does not directly retrain gaze stability, motion tolerance, or convergence. When deficits persist, vestibular rehabilitation can address the affected domain through a targeted exercise plan that progresses according to clinical findings and response. The VOMS pattern gives the receiving clinician a structured starting point for exercise selection, between-visit programming, and reassessment during the return-to-sport process.

Turning VOMS findings into a vestibular rehab exercise plan

A positive VOMS domain helps focus the follow-up examination, but it does not prescribe an exercise by itself. You should interpret symptom provocation alongside the athlete’s history, cervical findings, balance testing, and broader vestibular and ocular-motor examination. Once the examination confirms an impairment, you can select exercises that address the affected function.

A vestibulo-ocular reflex deficit may lead to gaze-stabilization work with controlled head movement. Convergence findings may support vergence exercises, while visual motion sensitivity may call for graded exposure to visually complex movement. Abnormal smooth pursuits or saccades can inform ocular-motor exercises or referral when findings require additional evaluation. Exercise selection, dosage, and progression remain individual clinical decisions based on symptom response and functional goals.

Between visits, a structured home exercise program gives the athlete clear instructions and gives you a consistent way to adjust the plan. The Physitrack program builder and sports medicine exercise library can support delivery of prescribed vestibular and ocular-motor exercises without replacing clinical judgment. You can update exercises as tolerance changes and keep the current program available through PhysiApp.

Adherence data adds useful context during the return-to-sport period. PhysiApp records completed sessions, sets and repetitions, and athlete-reported pain or difficulty for review in the clinician dashboard. You can use those records with repeat assessment findings and sport-specific progression criteria to judge whether the athlete followed the assigned program and how the plan should change.

Perguntas frequentes

How long does VOMS take to administer?

VOMS usually takes about five to ten minutes. Clinicians can record results before building any follow-on program in Physitrack. Familiarity with the sequence helps reduce administration time and variation.

Can VOMS diagnose a concussion by itself?

VOMS screens for vestibular and ocular-motor impairment associated with concussion. Physitrack does not replace the broader clinical assessment needed for diagnosis. Clinicians should interpret VOMS alongside symptoms, cognition, balance, neurologic findings, and injury history.

How does VOMS differ from a standard neurologic examination?

A standard neurologic examination assesses areas such as cranial nerve function, coordination, sensation, and motor performance. VOMS adds a structured measure of symptom provocation during specific eye, head, and visual-motion tasks. Clinicians can use identified deficits to inform subsequent assessment and exercise planning.

What equipment does VOMS require?

VOMS requires a visual target, a metronome, and a tape measure or ruler. Physitrack may support documentation and follow-on exercise delivery, but clinicians administer the screen with standard clinical equipment. A quiet testing area also helps limit unrelated symptom provocation.

Is VOMS reliable and valid?

Published studies support VOMS as a useful clinical screening tool, beginning with the original validation study by Mucha and colleagues in 2014. Physitrack does not determine the test’s psychometric properties or interpretation. Clinicians should consult the primary literature for population-specific validity, reliability, and cutoff data.

How does VOMS relate to SCAT6 and other sideline tools?

SCAT6 supports multimodal acute concussion assessment and includes symptom, cognitive, balance, and neurologic elements. VOMS provides a more focused vestibular and ocular-motor screen that can complement those findings. Clinicians may document both before using Physitrack to deliver an indicated home exercise program.