The Short Answer Educational content only. Any suspected concussion warrants medical evaluation. Consult vestibular-trained physical therapist, neuro-optometrist, or concussion specialist for individualized guidance. Post-trauma vision syndrome (PTVS) is constellation of visual dysfunction following traumatic brain injury including convergence insufficiency, accommodative dysfunction, oculomotor dysfunction, visual midline shift, and visual processing abnormalities (Silverberg et al., 2020). PTVS affects 60-90% of TBI and concussion patients. First described by Dr. William Padula in 1988. PTVS features include convergence insufficiency, accommodative dysfunction, saccadic dysfunction, smooth pursuit dysfunction, visual midline shift syndrome, spatial disorganization, and visual attention deficits. Diagnosis includes comprehensive neuro-optometric evaluation with vision therapy trained optometrist. Treatment includes vision therapy addressing specific deficits, prism lenses (particularly yoked prism for visual midline shift), and visual processing rehabilitation. Neuro-optometric rehabilitation associations (NORA) certification supports specialized care. PTVS is constellation of TBI visual dysfunction. Constellation of TBI visual dysfunction. Affects 60-90% of TBI and concussion patients. Affects 60-90% of TBI concussion. Vision therapy plus yoked prism treatment. Vision therapy plus yoked prism. Components of PTVS Convergence insufficiency (60-90%). Convergence insufficiency 60-90%. Accommodative dysfunction (40-60%). Accommodative dysfunction 40-60%. Saccadic dysfunction (50-70%). Saccadic dysfunction 50-70%. Smooth pursuit dysfunction (40-60%). Smooth pursuit dysfunction 40-60%. Visual midline shift syndrome. Visual midline shift syndrome. Spatial disorganization. Spatial disorganization. Visual attention deficits. Visual attention deficits. Visual motion sensitivity. Visual motion sensitivity. Photophobia. Photophobia. Visual field defects. Visual field defects. Visual Midline Shift Syndrome Perceived visual midline shifted from true midline. Perceived visual midline shifted from true midline. Right, left, forward, or backward shifts. Right left forward backward shifts. Postural changes accompanying visual shift. Postural changes accompanying visual shift. Balance affected. Balance affected. Gait deviations. Gait deviations. Yoked prism corrects perception. Yoked prism corrects perception. Padula test identifies shift. Padula test identifies shift. How Concussion Causes PTVS Focal visual pathway injury. Focal visual pathway injury. Diffuse axonal injury affecting visual system. Diffuse axonal injury affecting visual system. Occipital cortex vulnerability. Occipital cortex vulnerability. Parieto-occipital pathway injury. Parieto-occipital pathway injury. Visual-vestibular integration disruption. Visual-vestibular integration disruption. Ambient vision system disruption. Ambient vision system disruption. Focal vision system disruption. Focal vision system disruption. Focal vs Ambient Visual System Focal vision: central detailed vision. Focal vision central detailed vision. Ambient vision: peripheral spatial vision. Ambient vision peripheral spatial vision. PTVS often affects ambient vision. PTVS often affects ambient vision. Ambient vision guides posture and movement. Ambient vision guides posture and movement. Ambient vision disruption causes spatial disorganization. Ambient vision disruption causes spatial disorganization. Yoked prism addresses ambient vision. Yoked prism addresses ambient vision. Symptoms of PTVS Reading difficulty. Reading difficulty. Eye strain. Eye strain. Headache with visual tasks. Headache with visual tasks. Screen intolerance. Screen intolerance. Photophobia. Photophobia. Motion sickness. Motion sickness. Balance problems. Balance problems. Gait deviations. Gait deviations. Spatial disorientation. Spatial disorientation. Difficulty with peripheral vision. Difficulty with peripheral vision. Difficulty in crowded environments. Difficulty in crowded environments. Visual attention problems. Visual attention problems. Diagnostic Evaluation Comprehensive neuro-optometric evaluation. Comprehensive neuro-optometric evaluation. VOMS testing. VOMS testing. Convergence testing. Convergence testing. Accommodative testing. Accommodative testing. Saccadic testing. Saccadic testing. Smooth pursuit testing. Smooth pursuit testing. Padula visual midline shift test. Padula visual midline shift test. Visual field testing. Visual field testing. Reading assessment. Reading assessment. Treatment Approach Vision therapy addressing specific deficits. Vision therapy addressing specific deficits. Yoked prism for visual midline shift. Yoked prism for visual midline shift. Base-in prism for convergence insufficiency. Base-in prism for convergence insufficiency. Reading glasses for accommodative insufficiency. Reading glasses for accommodative insufficiency. FL-41 tinted lenses for photophobia. FL-41 tinted lenses for photophobia. Syntonic phototherapy at some clinics. Syntonic phototherapy at some clinics. Visual processing training. Visual processing training. Balance-visual integration exercises. Balance-visual integration exercises. Yoked Prism Therapy Same-direction prism in both lenses. Same-direction prism in both lenses. Shifts visual field perception. Shifts visual field perception. Corrects visual midline shift. Corrects visual midline shift. Improves posture. Improves posture. Improves balance. Improves balance. Improves spatial organization. Improves spatial organization. Typically 3-5 prism diopters. Typically 3-5 prism diopters. Padula test determines direction. Padula test determines direction. Prognosis Improvement within 12-24 weeks. Improvement within 12-24 weeks. Vision therapy resolves 60-80%. Vision therapy resolves 60-80%. Complex dysfunction longer treatment. Complex dysfunction longer treatment. Home exercise program essential. Home exercise program essential. Prism sometimes continued long-term. Prism sometimes continued long-term. Supporting Mobility Routine These exercises support vision therapy 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. Who diagnoses post-trauma vision syndrome? Neuro-optometrist with training in traumatic brain injury visual rehabilitation. Neuro-Optometric Rehabilitation Association (NORA) fellowship supports specialized training. College of Optometrists in Vision Development (COVD) certification alternative. Standard optometrist typically does not diagnose PTVS. Concussion clinic referral supports appropriate specialist selection. What is visual midline shift syndrome? Visual midline shift syndrome is component of PTVS where perceived visual midline is shifted from true midline. Right, left, forward, or backward shifts possible. Postural changes accompany visual shift. Balance and gait affected. Padula test identifies shift. Yoked prism corrects perception. Physical therapy addresses accompanying postural changes. How does yoked prism help post-trauma vision syndrome? Yoked prism uses same-direction prism in both lenses to shift visual field perception. Corrects visual midline shift. Improves posture, balance, and spatial organization. Typically 3-5 prism diopters. Padula test determines direction. Prism often worn during vision therapy. Some patients continue prism long-term. How is PTVS different from individual visual dysfunctions? PTVS refers to constellation of visual dysfunctions following traumatic brain injury rather than isolated conditions. Includes convergence insufficiency, accommodative dysfunction, oculomotor dysfunction, visual midline shift, and visual processing abnormalities. Multiple systems simultaneously affected. Treatment addresses interconnected dysfunctions. Comprehensive vision therapy program. Should I see a neuro-optometrist for post-concussion vision problems? Yes. Neuro-optometrist with NORA fellowship or COVD certification supports comprehensive PTVS evaluation. Standard vision exam misses most PTVS components. Neuro-optometric evaluation includes VOMS, convergence testing, accommodative testing, saccadic and smooth pursuit testing, Padula visual midline shift test, and reading assessment. Concussion clinic referral supports appropriate specialist selection. 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