Pediatric Concussions and Vision

Understanding How Concussions Affect Your Child's Vision

A concussion is a mild traumatic brain injury caused by a bump, blow, or jolt to the head, or by a hit to the body that causes the brain to move rapidly inside the skull. When we think about concussions in children, we tend to focus on headaches, dizziness, and fatigue. What many families do not realize is that a concussion is fundamentally a brain injury, and vision is fundamentally a brain process. More than half of the brain's neural pathways are involved in some aspect of visual function, from controlling eye movements to processing what we see into meaningful information. When a concussion disrupts the brain, it disrupts the visual system at the same time.

To understand why this happens, it helps to think about what the visual system actually does. Vision is far more than seeing clearly at a distance, which is what a standard eye chart measures. Functional vision includes the ability to aim both eyes at the same point in space, to track a moving object smoothly, to shift focus between near and far distances, to judge depth and spatial relationships, and to process visual information quickly enough to respond in real time. Each of these skills depends on precise coordination among many different brain regions. The brainstem controls the basic mechanics of eye movement. The cerebellum fine-tunes timing and coordination. The cerebral cortex handles higher-level processing, such as recognizing patterns, interpreting spatial information, and integrating what the eyes see with what the body feels and hears.

A concussion does not damage a single, isolated area. Instead, it creates a diffuse injury across the brain by stretching and shearing the delicate nerve fibers, called axons, that connect different brain regions. This means the communication networks that coordinate visual function can be disrupted even when the eyes themselves are completely healthy. Your child may pass a standard eye chart test with perfect 20/20 acuity and still have significant visual dysfunction because the brain's ability to process, coordinate, and respond to visual information has been compromised. A large pediatric study conducted at a major children's hospital found that vision diagnoses were present in the majority of concussed adolescents evaluated, confirming that post-concussion visual dysfunction is widespread in this age group. This finding reinforces the importance of evaluating the visual system after any concussion, not just in cases where a child reports obvious eye-related complaints.

Many children who sustain a concussion find that their headaches, nausea, and general fogginess begin to improve within the first few weeks. Parents often expect that as these symptoms lift, the recovery is essentially complete. However, visual symptoms frequently persist long after the initial concussion symptoms have faded. This pattern can be confusing and distressing for families who thought their child was getting better, only to find that struggles with reading, screen use, and concentration continue or even worsen once the child returns to school and daily activities.

The reason for this pattern lies in the demands placed on the visual system. During the initial rest period following a concussion, your child is typically resting in a dim room, avoiding screens, and not being asked to read, study, or perform sustained visual tasks. Under these conditions, the injured visual system is not being challenged, and its dysfunction may not be apparent. It is only when your child returns to school, homework, sports, and normal screen use that the full extent of the visual disruption becomes clear. The classroom places enormous demands on the visual system. Reading requires precise eye tracking, sustained near focus, and rapid processing of visual symbols. Copying from the board requires quick shifts in focus between near and far distances. Following a teacher who moves around the room requires smooth pursuit eye movements. These tasks expose the weaknesses in the visual processing network that were masked during the rest period.

Visual symptoms also persist because the neural pathways involved in vision are complex and interconnected. Even after the brain's general inflammation and metabolic disruption from the concussion have resolved, the fine-tuned coordination required for efficient visual function may remain impaired. The brain may develop compensatory strategies, such as using extra effort to maintain focus or suppressing input from one eye, that allow basic function but create fatigue, discomfort, and reduced performance over time.

Standard concussion management protocols have improved significantly over the past decade. Most pediatricians, school nurses, and sports medicine providers now follow established guidelines for initial evaluation, rest, and graduated return to activity. However, these protocols were designed primarily around cognitive and physical symptoms. They evaluate headache severity, memory, balance, and emotional state. They guide decisions about when a child can return to the classroom and to sports. What they typically do not include is a thorough evaluation of the visual system beyond basic acuity testing.

A standard concussion check may involve asking your child to read a few lines on a chart or follow a finger with their eyes. These brief screenings can detect gross abnormalities, such as a large eye turn or severely blurred vision, but they do not evaluate the full range of visual functions that a concussion can disrupt. They do not measure how well the two eyes converge on a near target, how smoothly the eyes track across a line of text, how quickly the focusing system shifts between distances, how the brain processes visual motion, or how the visual and vestibular systems are working together to maintain balance and spatial orientation.

A 2022 consensus statement published in a leading neurology journal by a joint panel of ophthalmologists, neuro-ophthalmologists, and neurologists acknowledged that visual symptoms frequently occur after mild traumatic brain injury and reviewed the growing evidence for visual rehabilitation. This cross-specialty recognition is significant because it confirms that the visual component of concussion recovery has been underaddressed in standard care. When the visual system is not formally evaluated, children can be cleared to return to school and sports while still carrying significant visual dysfunction. This can lead to ongoing academic struggles, persistent headaches during reading, difficulty with sports performance, and frustration that neither the child nor the family can fully explain.

Visual Symptoms of Concussion in Children

Light sensitivity, known as photophobia, is one of the most common visual symptoms children experience after a concussion. It occurs because the brain's ability to regulate and process incoming light has been disrupted. In a healthy visual system, the brain automatically adjusts to different lighting conditions. After a concussion, this regulation can break down, causing normal levels of light to feel overwhelming or painful. Parents may notice the following signs of light sensitivity and visual discomfort in their child.

  • Squinting or shielding the eyes in environments that did not bother your child before the injury, such as classrooms with fluorescent lighting, sunny playgrounds, or grocery stores
  • Complaints of headaches or eye pain that worsen in brightly lit environments or under artificial overhead lighting
  • A strong preference for dimly lit rooms, wearing hats or sunglasses indoors, or pulling the hood of a sweatshirt over the forehead to block overhead light
  • Discomfort or agitation in visually busy environments such as shopping centers, school hallways during passing periods, or restaurants with multiple screens and moving images
  • Increased headache frequency on school days compared to weekends, particularly in classrooms with harsh lighting or large windows without shading
  • Watery eyes, excessive blinking, or the sensation that the eyes feel strained or heavy in certain lighting conditions
  • Difficulty transitioning between different lighting environments, such as moving from a dark hallway into a sunlit room, with symptoms of disorientation or discomfort during the adjustment

Reading is one of the most demanding tasks the visual system performs. It requires the eyes to make precise, coordinated jumps across lines of text, called saccades. It requires the focusing system to lock onto a near target and hold that focus steadily. It requires the brain to process streams of visual symbols rapidly and convert them into meaning. When a concussion disrupts any of these functions, reading becomes effortful, fatiguing, and sometimes painful. Parents and teachers may notice the following signs when a child is struggling with post-concussion reading and concentration difficulties.

  • Losing their place on the page repeatedly, needing a finger or ruler to track lines of text, or re-reading the same line without realizing it
  • Reading much more slowly than before the injury, with reduced comprehension despite appearing to try hard
  • Complaining that words seem to blur, double, jump, or swim on the page after a few minutes of reading
  • Developing headaches, nausea, or eye strain that begin during reading and continue after stopping
  • Difficulty sustaining attention during reading or homework, with a strong desire to stop after a very short period
  • Rubbing the eyes frequently, closing or covering one eye, or tilting the head to one side during near work
  • A noticeable drop in reading grades or academic performance since the concussion, despite a prior history of performing well in school

The visual system and the vestibular system, which controls balance and spatial awareness, are deeply interconnected. The brain uses visual information to determine where the body is in space, how fast things are moving, and whether the surrounding environment is stable. After a concussion, the communication between the visual and vestibular systems can become disrupted, causing dizziness, imbalance, and sensitivity to motion. These symptoms can significantly affect your child's ability to participate in physical activities, navigate busy environments, and feel physically comfortable during everyday movements.

  • Dizziness or a sensation of the room spinning when standing up quickly, turning the head, or bending down
  • Difficulty walking in a straight line, bumping into door frames or walls, or appearing unsteady on their feet in a way that was not present before the injury
  • Nausea or discomfort while riding in a car, especially when looking out the side windows or watching objects pass by
  • Feeling overwhelmed or unsteady in environments with a lot of visual motion, such as crowded school hallways, escalators, or busy streets
  • Difficulty with sports or physical education activities that require balance, quick direction changes, or tracking a moving ball
  • A sensation of the ground being uneven or unstable, even on flat surfaces
  • Avoidance of activities that require head movement, such as looking up quickly or turning to check over the shoulder

Screens place significant demands on the visual system because they require sustained near focus, precise eye coordination, and continuous processing of rapidly changing visual information. After a concussion, many children develop a marked intolerance for screen use and other near-work tasks that they previously handled without difficulty. This can be especially distressing for children and teens whose social connections, schoolwork, and entertainment rely heavily on digital devices. Parents may observe the following patterns of screen and near-work intolerance.

  • Headaches, nausea, or eye pain that develop within minutes of looking at a computer, tablet, or phone screen
  • Difficulty completing homework assignments on a computer or reading digital text, despite being able to manage the same work on paper for slightly longer periods
  • Needing to take frequent breaks during screen use, holding the device at unusual distances, or turning down screen brightness to an extreme level
  • Avoidance of video games, social media, and streaming content that the child previously enjoyed, sometimes mistaken for depression or loss of interest
  • Increased symptoms during virtual learning or computer-based testing at school
  • Discomfort during other near-work tasks beyond screens, such as drawing, puzzles, board games, or building projects that require sustained close focus

Return to Learn, Return to Play, and When to Seek a Neuro-Visual Evaluation

The return-to-learn and return-to-play protocols that guide concussion recovery are structured as graduated steps. A child must tolerate one level of activity without a worsening of symptoms before progressing to the next level. The goal is to prevent re-injury and to ensure that the brain has healed sufficiently to handle increasing cognitive and physical demands. Visual dysfunction can create a significant barrier at several stages of these protocols because so many of the tasks involved in learning and sports depend on a healthy visual system.

In the return-to-learn process, the earliest steps involve short periods of reading, writing, and screen use. If your child's visual system cannot sustain near focus, track lines of text, or tolerate screen lighting without triggering headaches and fatigue, they will struggle to progress beyond these initial steps. Teachers and parents may see the child attempting to keep up with schoolwork but experiencing symptom flare-ups that force them back to rest. This cycle of attempting to learn, experiencing visual symptoms, and retreating can continue for weeks or months if the visual component is not identified and addressed. The child may be described as not progressing in their concussion recovery when in reality the stalled recovery is being driven by untreated visual dysfunction.

In the return-to-play process, visual dysfunction creates similar barriers. Sports require precise eye tracking, rapid shifts in focus, depth perception for judging distances, and the integration of visual and vestibular information for balance and spatial awareness. A child whose visual processing is impaired may feel dizzy during running, misjudge the trajectory of a ball, or lose balance during direction changes. These difficulties increase the risk of poor performance and may also increase the risk of further injury if the child cannot accurately perceive and respond to their physical environment. Research from leading neurology institutions has noted that vision therapy efficacy for convergence insufficiency, a condition where the eyes struggle to aim inward at a near target, is plausible and supported by data, though researchers continue to call for further trials specific to mild traumatic brain injury populations. This finding supports the role of targeted visual rehabilitation as part of a comprehensive return-to-activity strategy.

A neuro-visual evaluation is a comprehensive assessment of how the entire visual system is functioning, from the mechanics of eye movement to the brain's processing of visual information. It goes far beyond a standard eye exam. While a standard exam checks whether your child can see clearly at a distance, a neuro-visual evaluation measures eye teaming, convergence, divergence, tracking accuracy, focusing flexibility, visual processing speed, visual-vestibular integration, and the brain's ability to combine input from both eyes into a stable, three-dimensional picture. This level of evaluation is the only way to determine whether a concussion has disrupted the visual system and to identify precisely which visual functions need to be restored.

There are several situations in which seeking a neuro-visual evaluation is particularly important. If your child's concussion symptoms have persisted beyond two to four weeks, especially symptoms related to reading, screens, light sensitivity, balance, or concentration, these may be signs that the visual system has been affected. If your child has been cleared by their primary care provider or sports medicine doctor but continues to struggle with schoolwork, report headaches during reading, or avoid activities they used to enjoy, a visual component may be the missing piece of the recovery. If your child has attempted to return to school or sports but keeps experiencing setbacks or symptom flare-ups during visual tasks, this pattern strongly suggests that the visual system needs targeted evaluation and treatment. Even if your child seems to be recovering well overall, a neuro-visual evaluation after any concussion can identify subtle dysfunctions that might not cause obvious symptoms during rest but could create problems once full academic and athletic demands resume.

Seeking a neuro-visual evaluation does not mean that your child's other providers have failed. It means that the visual system, which is one of the most complex and vulnerable systems affected by concussion, requires the specialized tools and expertise of a neuro-visual evaluation to assess properly. The earlier a visual dysfunction is identified after a concussion, the sooner treatment can begin, and the more quickly your child can move through the return-to-learn and return-to-play process with confidence.

The Integrated Treatment Approach for Pediatric Concussion Vision Recovery

A concussion does not injure a single visual skill in isolation. It disrupts an interconnected network of brain functions that depend on each other. Eye tracking depends on brainstem coordination. Focusing depends on neural circuits that also regulate convergence. Visual processing depends on the integration of information from the eyes, the vestibular system, and the proprioceptive system, which tells the brain where the body is in space. Because these systems are so deeply intertwined, treating one visual function in isolation is unlikely to produce complete recovery. An integrated approach addresses the visual system as a whole, targeting multiple functions in a coordinated sequence that allows the brain to rebuild the connections between them. This is especially important for children, whose brains are still developing and whose neural pathways are particularly responsive to guided training. Children rely on their visual system for learning, social interaction, sports, and the daily tasks that build confidence and independence. When a concussion disrupts this system, the effects ripple across every area of their lives. An integrated treatment approach recognizes that restoring clear, comfortable, and efficient vision requires more than strengthening individual eye muscles or prescribing a new pair of glasses. It requires retraining the brain's entire visual processing network to work together as a coordinated, efficient system.

The core treatments used in pediatric concussion vision recovery fall under a comprehensive framework called Neuro-Visual Performance Training. This framework combines multiple therapeutic approaches, each targeting different layers of the visual processing system, to rebuild the brain's ability to coordinate and process visual information after injury. The following treatment methods form the foundation of this integrated approach.

Vision Therapy

Vision therapy is a structured program of therapeutic activities designed to improve the brain's control over specific visual functions such as eye teaming, tracking, focusing, and convergence. For a child recovering from a concussion, vision therapy addresses the functional breakdowns that cause difficulty with reading, screen use, and close work. Each session uses carefully sequenced activities that challenge the visual system at gradually increasing levels of difficulty. The activities may involve specialized lenses, prisms, therapeutic targets, and carefully designed tasks that require the eyes and brain to work together in specific ways. Over time, these activities rebuild the neural pathways that were disrupted by the concussion, allowing the child's visual system to regain the speed, accuracy, and endurance needed for academic and athletic performance. Vision therapy is not a set of generic eye exercises. Each program is tailored to the specific dysfunctions identified during the child's neuro-visual evaluation, and the difficulty level is adjusted as the child progresses through treatment.

Perceptual Training

Perceptual training targets the brain's ability to make sense of visual information, which is distinct from the ability to see it clearly. After a concussion, many children can see an image or a word on the page but struggle to process it quickly, accurately, or in the correct spatial context. Perceptual training works on skills such as visual memory, figure-ground discrimination (the ability to identify a specific object within a cluttered background), visual-spatial reasoning, and the speed at which the brain can process and respond to visual input. For children recovering from a concussion, perceptual training helps restore the higher-level processing functions that are essential for reading comprehension, math problem solving, navigating busy hallways, and participating in sports where rapid visual decisions are required. This type of training is especially important because perceptual difficulties are often invisible. A child may appear to see clearly but process what they see too slowly or inaccurately, leading to frustration and declining performance.

Optometric Multi-Sensory Training (OMST)

Optometric Multi-Sensory Training, or OMST, addresses the connections between the visual system and the other sensory systems that work with it, particularly the vestibular system (balance and spatial orientation) and the proprioceptive system (the body's sense of its own position and movement). After a concussion, these systems often become disconnected, causing dizziness, imbalance, motion sensitivity, and spatial disorientation. OMST uses activities that require the child to process visual, vestibular, and proprioceptive information at the same time, challenging the brain to rebuild the integration between these systems. A child might perform a visual tracking task while standing on an unsteady surface, for example, or practice shifting focus between near and far targets while the body is in motion. By training the sensory systems to communicate with each other under controlled, gradually increasing challenges, OMST helps restore the coordinated function that the concussion disrupted. This is particularly important for children who experience dizziness or imbalance in busy environments, during physical education, or when riding in a car.

Optometric Phototherapy (Syntonics)

Optometric phototherapy, also called syntonics, uses specific wavelengths of light to stimulate and regulate visual processing pathways in the brain. The treatment involves having the child view calibrated colored light through a specialized instrument for short, controlled sessions. Different wavelengths of light have been shown to affect the autonomic nervous system and the retinal pathways that communicate directly with brain regions involved in visual processing, attention, and pupil regulation. For children recovering from a concussion, phototherapy can help address light sensitivity, visual fatigue, and difficulties with sustained attention that are related to disrupted neural regulation. It is often used as a preparatory treatment to improve the brain's readiness for the more demanding activities involved in vision therapy and perceptual training. Because light sensitivity is one of the most common and most disruptive visual symptoms after a concussion in children, addressing it early in the treatment process can significantly improve your child's comfort and their ability to engage in the rest of their rehabilitation program.

No two children experience concussion-related visual dysfunction in exactly the same way. The specific visual functions affected, the severity of the disruption, and the child's age, development, and visual demands all shape the recovery process. Because of this variability, treatment programs may incorporate additional tools and techniques beyond the core therapies to address each child's unique pattern of dysfunction. These tools are selected based on the findings of the neuro-visual evaluation and adjusted throughout treatment as the child progresses.

  • Therapeutic lenses prescribed to reduce visual stress, support the focusing system, or modify how the brain processes spatial information during the recovery period
  • Prism lenses that adjust the direction of incoming light to reduce strain on the eye teaming system, help resolve double vision, or address visual midline shifts that affect posture and balance
  • Tinted or filtered lenses selected to reduce specific wavelengths of light that trigger discomfort, helping manage photophobia during recovery
  • Computer-based visual training programs that provide precise, measurable challenges for visual processing speed, reaction time, and eye-hand coordination
  • Balance and coordination activities integrated with visual tasks to rebuild the vestibular-visual connection that governs spatial awareness and stability
  • Binasal occlusion techniques using partial lens modifications to reduce peripheral visual input, which can help children who experience visual overload or motion sensitivity in busy environments
  • Home-based reinforcement activities assigned between office visits to strengthen the skills being developed during in-office sessions and accelerate progress

Treatment for concussion-related visual dysfunction in children typically begins with a comprehensive neuro-visual evaluation that maps the specific areas of the visual system that have been affected. Based on these findings, a customized treatment program is designed to address your child's particular pattern of dysfunction. Treatment sessions are usually conducted once or twice per week in the office and supplemented by home-based activities between visits. Each session is guided by a trained therapist who works directly with your child, adjusting the difficulty and type of activities based on how the child is responding. Sessions typically last between 30 and 60 minutes. The pace of treatment is tailored to your child's tolerance, because pushing a concussion-recovering brain too hard too fast can temporarily worsen symptoms. Early in treatment, the focus may be on reducing discomfort, stabilizing the basic mechanics of eye movement, and managing light sensitivity. As the brain begins to recover and tolerate more challenge, the focus shifts to rebuilding eye teaming, tracking, focusing, and perceptual processing at higher levels of complexity. Most children begin to notice improvement in their most bothersome symptoms within the first several weeks of treatment, though the full program may continue for several months depending on the severity of the visual dysfunction. Parents are an important part of the process. We provide regular updates on progress, explain what is happening at each stage, and equip families with the tools and activities needed to support recovery at home.

We understand that many families live far from our office and that weekly visits over several months may not be practical for families traveling from other states or other countries. For these families, we offer an intensive treatment program that condenses the treatment process into a concentrated schedule. In this program, your child attends multiple extended sessions per week over a shorter overall time period, allowing the family to complete a significant portion of treatment during a single visit to our area. Before arriving, the family receives a detailed evaluation and treatment planning process so that the intensive program can begin immediately. Each day of the intensive program is structured to maximize therapeutic progress while respecting the recovering brain's need for appropriate rest and recovery between sessions. A comprehensive home program is designed before the family returns home, providing the activities and guidance needed to continue building on the progress achieved during the intensive period. Follow-up appointments can be conducted remotely to monitor progress, adjust the home program, and determine whether additional in-office sessions are needed. This intensive format has allowed families from across the country and around the world to access specialized neuro-visual treatment for their child's concussion recovery without the burden of relocating or making repeated long-distance trips over many months.

Neuroplasticity is the brain's ability to form new connections, strengthen existing pathways, and reorganize itself in response to experience and training. This ability is the foundation of all concussion vision recovery. When a concussion disrupts the neural pathways that coordinate visual function, neuroplasticity is what allows those pathways to be rebuilt. The developing brain of a child has an especially robust capacity for neuroplastic change, which means that children often respond well to properly designed visual rehabilitation. The goal of treatment is not simply to reduce symptoms temporarily but to build new, efficient visual pathways that become the brain's default way of processing visual information. Think of it like learning to ride a bicycle. At first, the activity requires intense concentration, and every wobble feels significant. With practice, the neural pathways for balancing, steering, and pedaling become so well established that the skill becomes automatic. The same principle applies to the visual skills rebuilt through neuro-visual training. Through repeated, guided practice, the brain forms and strengthens the neural circuits that coordinate eye movement, focusing, processing, and sensory integration until these functions become automatic and effortless. This is why the gains achieved through a comprehensive treatment program tend to be lasting. The brain is not just compensating for a weakness. It is building new, durable pathways that support efficient visual function over the long term. For children recovering from a concussion, this means that treatment is an investment in their brain's ability to support learning, sports, and daily life going forward.

Frequently Asked Questions

If your child is experiencing visual symptoms such as headaches during reading, light sensitivity, difficulty concentrating, or blurred vision, a neuro-visual evaluation can be helpful at any point in the recovery process. Many families seek evaluation when symptoms persist beyond two to four weeks, or when a child is struggling to progress through return-to-learn or return-to-play protocols. Early evaluation can help identify visual dysfunction before compensatory habits develop, which can make treatment more straightforward. However, children who are evaluated weeks or even months after their concussion can still benefit significantly from treatment.

Standard glasses correct how clearly the eyes can see, which is called visual acuity. After a concussion, the visual problems are typically related to how the brain coordinates and processes visual information, not to the clarity of the image reaching the eye. Your child may have 20/20 eyesight and still have significant dysfunction in eye teaming, tracking, focusing, or visual processing. Therapeutic lenses or prisms may be used as one component of treatment to reduce visual stress, but they work best as part of a comprehensive program that also retrains the brain's visual processing network. Glasses alone do not rebuild the neural pathways that a concussion disrupted.

The length of treatment depends on the severity and complexity of the visual dysfunction, how long the symptoms have been present, and how the child responds to treatment. Many children begin to see meaningful improvement in their most disruptive symptoms within the first several weeks. A full treatment program typically spans several months, with sessions occurring once or twice per week alongside a home-based activity program. The intensive program option condenses this timeline for families who are traveling from a distance.

Some mild visual symptoms may improve with rest and time, particularly in the first few weeks after a concussion. However, visual symptoms that persist beyond the initial recovery period often do not resolve on their own without targeted intervention. The brain may develop compensatory strategies that mask the problem, such as avoiding reading, using extra effort to maintain focus, or relying more heavily on one eye. These compensations can allow the child to function but with increased fatigue, reduced performance, and ongoing discomfort as a result. Targeted treatment is designed to restore efficient visual function rather than relying on compensations that are energy-intensive and unsustainable.

Most children continue attending school during treatment. In fact, one of the goals of treatment is to make school more manageable by reducing the visual symptoms that interfere with learning. During the early stages of treatment, accommodations such as reduced screen time, extra breaks during reading, modified lighting, and extended time on assignments can help your child manage their symptoms while the visual system is being rehabilitated. As treatment progresses and visual function improves, these accommodations are gradually reduced. We work with families to communicate with schools about appropriate accommodations so that your child can stay engaged in learning while their visual system recovers.

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