The Short Answer Educational content only. Any suspected concussion warrants medical evaluation. Consult neuro-optometrist, vestibular-trained physical therapist, or concussion specialist for individualized guidance. Smooth pursuit dysfunction after concussion is impaired ability to track moving objects with the eyes, affecting 40-60% of concussion patients (Silverberg et al., 2020). Reduced smooth pursuit gain (velocity ratio between eye and target) and saccadic intrusions during pursuit are characteristic. Normal smooth pursuit gain approaches 1.0 (eyes match target velocity). Post-concussion pursuit gain typically 0.6-0.9. Symptoms include difficulty tracking moving objects, motion sickness, difficulty watching scrolling text, difficulty following ball in sports, and sensation of jumpy vision. Diagnosis includes VOMS (Vestibular/Ocular Motor Screening) smooth pursuit assessment and video oculography. Treatment includes smooth pursuit training exercises with pen tracking, ball tracking, and computer-based pursuit training. Smooth pursuit dysfunction affects 40-60% of concussions. Affects 40-60% of concussions. Reduced pursuit gain characteristic. Reduced pursuit gain characteristic. VOMS testing screens dysfunction. VOMS testing screens dysfunction. Normal Smooth Pursuit Eyes track moving target continuously. Eyes track moving target continuously. Eyes match target velocity. Eyes match target velocity. Pursuit gain approaches 1.0 normal. Pursuit gain approaches 1.0 normal. Cerebellar flocculus and paraflocculus control. Cerebellar flocculus paraflocculus control. Middle temporal (MT) cortex processes motion. Middle temporal MT cortex processes motion. Frontal eye fields contribute. Frontal eye fields contribute. Parieto-occipital pathway involvement. Parieto-occipital pathway involvement. How Concussion Causes Smooth Pursuit Dysfunction Cerebellar injury reduces pursuit gain. Cerebellar injury reduces pursuit gain. MT cortex motion processing disruption. MT cortex motion processing disruption. Frontal eye field disruption. Frontal eye field disruption. Parieto-occipital pathway injury. Parieto-occipital pathway injury. Diffuse axonal injury affects pursuit circuits. Diffuse axonal injury affects pursuit circuits. Vestibulo-ocular reflex interaction disrupted. Vestibulo-ocular reflex interaction disrupted. Characteristics of Post-Concussion Pursuit Dysfunction Reduced pursuit gain (0.6-0.9). Reduced pursuit gain 0.6-0.9. Saccadic intrusions during pursuit. Saccadic intrusions during pursuit. Catch-up saccades common. Catch-up saccades common. Back-up saccades possible. Back-up saccades possible. Asymmetric pursuit (worse one direction). Asymmetric pursuit worse one direction. Vertical pursuit often worse than horizontal. Vertical pursuit often worse than horizontal. Fatigue with sustained pursuit. Fatigue with sustained pursuit. Symptoms Difficulty tracking moving objects. Difficulty tracking moving objects. Difficulty following ball in sports. Difficulty following ball in sports. Difficulty watching movies with fast motion. Difficulty watching movies with fast motion. Difficulty watching scrolling text. Difficulty watching scrolling text. Motion sickness with tracking. Motion sickness with tracking. Sensation of jumpy vision. Sensation of jumpy vision. Headache with tracking tasks. Headache with tracking tasks. Difficulty driving. Difficulty driving. Difficulty crossing streets. Difficulty crossing streets. Difficulty in crowds. Difficulty in crowds. Diagnostic Testing VOMS smooth pursuit assessment. VOMS smooth pursuit assessment. Pen or finger tracking (horizontal, vertical). Pen or finger tracking horizontal vertical. Video oculography. Video oculography. Videonystagmography (VNG). Videonystagmography VNG. Rotational chair testing. Rotational chair testing. Sinusoidal pursuit testing. Sinusoidal pursuit testing. Neuro-optometric evaluation. Neuro-optometric evaluation. VOMS Smooth Pursuit Assessment Patient tracks finger 3 feet away. Patient tracks finger 3 feet away. Horizontal pursuit 2 seconds each direction. Horizontal pursuit 2 seconds each direction. Vertical pursuit 2 seconds each direction. Vertical pursuit 2 seconds each direction. Symptom provocation rated 0-10. Symptom provocation rated 0-10. Headache, dizziness, nausea, fogginess rated. Headache dizziness nausea fogginess rated. Increase of 2 or more suggests dysfunction. Increase of 2 or more suggests dysfunction. Vision Therapy for Smooth Pursuit Pen tracking exercises. Pen tracking exercises. Ball tracking exercises. Ball tracking exercises. Marsden ball tracking. Marsden ball tracking. Wayne saccadic fixator (pursuit mode). Wayne saccadic fixator pursuit mode. Computer-based pursuit training. Computer-based pursuit training. VOR-cancellation training. VOR-cancellation training. Progressive velocity training. Progressive velocity training. Home exercise program. Home exercise program. Sports-Specific Rehabilitation Sport-specific tracking drills. Sport-specific tracking drills. Ball tracking sport-appropriate. Ball tracking sport-appropriate. Progressive speed introduction. Progressive speed introduction. Multi-directional tracking. Multi-directional tracking. Return-to-sport gradual progression. Return-to-sport gradual progression. Prognosis Improvement within 8-16 weeks. Improvement within 8-16 weeks. Vision therapy resolves 70-85%. Vision therapy resolves 70-85%. Home exercise program essential. Home exercise program essential. Sport-specific training supports return-to-play. Sport-specific training supports return-to-play. Supporting Mobility Routine These exercises support smooth pursuit rehabilitation through cervical mobility and nervous system regulation. JME 155 Diaphragmatic breathing supports vagal tone and parasympathetic regulation during concussion recovery. 10 breaths every 60-90 minutes. JME 14 Chin tucks reduce upper cervical tension common in concussion injury. 10 repetitions with 5-second holds. JME 1 Cervical rotation supports cerebral blood flow and nervous system regulation. 10 repetitions each direction. JME 150 Thoracic rotation restores breathing depth shallow during concussion recovery. 8 repetitions per direction. Start your 3-day free trial for joint-specific mobility programs that support nervous system regulation through concussion recovery. How does smooth pursuit dysfunction affect sports performance? Smooth pursuit dysfunction significantly impairs ball tracking, following opponents, and reading play development. Athletes report ball appearing to jump, difficulty following passes, and delayed reaction to moving stimuli. Return-to-sport requires normalized smooth pursuit function. Sport-specific tracking rehabilitation supports return-to-play. Baseline VOMS testing supports comparison. What causes motion sickness after concussion? Post-concussion motion sickness results from smooth pursuit dysfunction, vestibular-visual mismatch, and central vestibular processing disruption. Reduced pursuit gain creates conflict between visual motion perception and expected motion. Scrolling text, movies with fast motion, and passenger travel commonly trigger. Habituation exercises and gradual exposure improve tolerance. Can I use smooth pursuit training on my own? Home smooth pursuit training useful after initial neuro-optometric evaluation. Simple pen tracking exercises can be done independently. Structured program with neuro-optometrist more effective than random self-training. VOMS-guided progression supports safety. Return to provider if symptoms worsen. Not appropriate before initial evaluation. Why is vertical pursuit often worse than horizontal after concussion? Vertical smooth pursuit requires additional neural circuits including brainstem interstitial nucleus of Cajal. Cerebellum plays greater role in vertical pursuit. Concussion often affects vertical pursuit disproportionately. Assessment includes both horizontal and vertical pursuit. Rehabilitation addresses both directions. Vertical pursuit deficits often persist longer. Should athletes have baseline VOMS testing? Yes. Baseline VOMS testing before season supports concussion assessment and return-to-play decisions. Comparison to baseline more accurate than population norms. VOMS includes smooth pursuit, saccades, near point of convergence, VOR, and visual motion sensitivity assessment. Sideline VOMS assessment identifies vestibular-ocular dysfunction. Baseline testing widely used in athletics. References Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed Silverberg, N. D., et al. (2020). Management of concussion and mild traumatic brain injury: a synthesis of practice guidelines. Archives of Physical Medicine and Rehabilitation, 101(2), 382-393. PubMed