Screen intolerance is one of the most common and frustrating problems after a concussion. For many people, even just looking at a phone may bring on a headache within minutes. Answering emails can cause eye fatigue or brain fog. Scrolling through social media may trigger dizziness, nausea or a sense that your eyes cannot keep up.

That creates a practical problem: how do we return to work and school when everything is now on a screen. Screens have become central to work, school, communication and leisure time activities, so completely avoiding them indefinitely is rarely realistic and, in most cases, it is not the goal. As with many other parts of concussion recovery, screen tolerance can be rebuilt through a gradual and structured rehabilitation process.

The research on screen use after concussion is still relatively new. We do not yet have one universally accepted return-to-screen protocol that will suit every adult or adolescent. Therefore, I have used a combination of the research and clinical experience to generate this practical guide on how to progressively and safely return to screen use after a concussion.

Currently, the available evidence gives us three useful overarching principles:

  1. Substantially reducing or eliminating screen exposure during the first 48 hours may shorten recovery. In a randomized clinical trial involving people aged 12 to 25, those asked to avoid screens for 48 hours recovered faster than those allowed unrestricted screen use. [1]
  2. After the initial screen restriction period, both very high and very low screen use may be unhelpful. An observational study of children and adolescents found that the highest and lowest screen-use groups reported more symptoms during the first 30 days than those with moderate use. [2]
  3. The type of cognitive and screen activity appears to matter. Among adolescents, time spent returning to class and completing appropriately challenging cognitive activity was associated with faster symptom resolution, while heavy computer use—including video games during the first week—appeared less helpful.[3]

The practical message is not that screens are inherently harmful after a concussion- but they are challenging for your brain to management because of the integration of much much sensory information. The research seems to suggest that it is not screens themselves that are the main problem, but it is more about the dose, timing and type of screen exposure that matters most.

The short answer: should you avoid screens after a concussion?

For the first 48 hours, screen use should be kept minimal. After that, begin reintroducing phones, computers, television and other visual tasks gradually, provided the increase in symptoms remains mild and settles with rest.

Avoid two extremes: trying to push through a full day of screen-based work immediately, and staying away from screens for weeks because they provoke any symptoms at all. The long-term goal is to rebuild normal tolerance—not to organize your life indefinitely around avoiding visual stimulation.

The following is the return-to-screen framework we commonly use in clinic. It is a practical guide, not a rigid prescription. Every concussion is different, and your progression should be adapted to your symptoms, examination findings, work or school demands, and stage of recovery.

Spend at least 24 hours at each stage before attempting the next one. If moving forward causes a significant symptom increase, return to the previous stage for at least 24 hours before trying again.

Important: Before beginning a return-to-screen plan—or any other concussion intervention—be assessed by a qualified healthcare professional to confirm that it is safe and appropriate for you. This article is for general education only. It is not a diagnosis or an individualized treatment plan.

Step 1: Keep screen use under one hour per day for the first 48 hours

During the first two days after a head injury, the priority is to reduce unnecessary stimulation while the brain begins recovering from the energy disturbance created by the injury. This does not necessarily mean lying in a dark room or eliminating every screen. It means keeping screen exposure brief, cognitively light and symptom-limited.

Limit both total time and individual sessions

  • Keep total screen exposure below one hour per day.
  • Use screens only for light tasks, such as checking an important email or briefly looking something up online.
  • Break that time into sessions of approximately 10 to 15 minutes.
  • Do not push through symptoms at this stage. If a screen causes any noticeable symptom increase, end the session and rest.
  • For many people, this will require time away from work or school to avoid overloading the brain during the acute phase.

Start with the easiest type of screen

Phones are often more visually demanding than larger computer screens because of their smaller text, close viewing distance and the way people use them. When possible, begin with a computer rather than a phone.

  • Be especially careful with TikTok, Instagram and other continuously scrolling feeds. The constant visual movement can be difficult for the eyes to track and may provoke symptoms quickly.
  • Television, YouTube or Netflix may be better tolerated, but choose slow-paced programs that are not visually intense.
  • Increase the font size on emails, websites and text messages to reduce visual strain.
  • Try a warmer display setting such as Night Shift to reduce blue-light intensity if it makes the screen more comfortable.
  • Lower the brightness to the dimmest setting that remains easy to see. A screen that is too dark can also increase eye strain.
  • Check the room for window reflections, overhead lights, glare and other visual distractions.

Step 2: Gradually reintroduce screen time over the next three to seven days

Once the first 48 hours have passed, begin increasing both the total amount of screen time and the length of each session as symptoms permit.

At this point, neither extreme is ideal. Too much screen exposure can continue to overload a sensitive visual and cognitive system. Too little exposure may allow the eyes and brain to become increasingly sensitive, making the eventual return to school, work and normal life more difficult.

Build screen tolerance gradually

  • Aim for roughly two to three hours of total screen time per day, progressing toward half-days of work or school as tolerated.
  • Begin with sessions of approximately 20 to 30 minutes.
  • Mild symptoms are acceptable. As a practical limit, do not allow symptoms to rise by more than 3 out of 10 above your pre-session baseline.
  • If symptoms rise beyond that level, stop, allow them to settle and reduce the duration or difficulty of the next session.

Begin normalizing how you use your devices

  • Gradually return fonts toward their usual size.
  • Continue using Night Shift or another warmer colour setting when needed.
  • Start increasing phone use as tolerated rather than relying exclusively on a computer.
  • Social-media feeds may still be difficult. If you want to test them, begin with sessions shorter than five minutes.

Add non-screen visual work

Screen tolerance is partly a question of visual endurance. It can be helpful to challenge the visual system without adding the brightness and movement of a digital display.

  • Use paper-based tasks such as reading a printed book, completing a crossword or doing Sudoku.
  • Gradually build toward as much as one hour of non-screen reading or focused visual activity at a time.
  • Begin any individualized visual-rehabilitation exercises prescribed by your healthcare provider.
  • Gradually increase normal light exposure. That may include walking outdoors in daylight and reducing unnecessary reliance on sunglasses or other protective eyewear.

Step 3: Increase screen duration and return to half-days of work or school

The third stage is about restoring more normal visual and cognitive endurance. You will begin using screens in longer blocks and in the context in which you actually need them—whether that is a morning at the office, an afternoon of classes or a sustained period of computer work at home.

Some increase in symptoms can occur as the cognitive demands become more realistic. That is common. The objective is to keep the response mild and manageable while your tolerance improves.

Return to a half-day schedule

  • Increase total screen use to approximately four to five hours per day.
  • Condense that time into a normal work or school morning or afternoon rather than scattering brief sessions across the entire day.
  • A useful starting point is two screen sessions of one to two hours each, separated by a short break.
  • Mornings are often better tolerated because mental energy is usually highest after a night of sleep.
  • Continue to keep symptom increases to no more than 3 out of 10 above baseline during screen use.

Work toward normal display settings and phone use

  • Return font size and screen brightness toward their normal settings.
  • Begin removing Night Shift as tolerated, provided symptoms remain within the 3-out-of-10 limit.
  • Use social media and other phone apps more regularly as your tolerance improves.

Progress visual rehabilitation

  • Work toward normal reading and visual function during paper-based tasks, puzzles and other non-screen activities.
  • Continue and progress any visual exercises prescribed by your healthcare provider.
  • Keep increasing exposure to ordinary indoor and outdoor lighting, including spending time outside and reducing the use of sunglasses when they are no longer necessary.

Step 4: Return to normal screen use and full days at work or school

The final stage is a return to screen use that is as close as possible to your pre-injury routine. At this point, there is no fixed cap on screen time when you are symptom-free. Duration and task difficulty are guided by your response.

Resume full work or school days

  • Build toward six to eight hours of screen use per day, with breaks as needed.
  • Continue using screens provided symptoms do not worsen significantly.
  • The goal is normal computer and phone use, not simply the ability to tolerate one carefully controlled task.

Wean away from temporary modifications

  • Gradually remove changes to font size, brightness, colour temperature and other display settings.
  • If you still need some modifications to complete a full day, that is acceptable. Continue using them when necessary while deliberately spending small portions of the day without them so that you do not become dependent on the accommodation.
  • Highly stimulating video games or movies—such as Call of Duty or The Incredibles 2—should be some of the final activities added back. Wait until full days of work or school are well tolerated before attempting them.

Safety note: If your work can place you or someone else at risk, obtain medical clearance before resuming the relevant duties. Examples include operating heavy machinery, driving for long periods or working at heights.

What if screen intolerance is not improving?

If this progression takes longer than two weeks, or you become stuck at one stage and cannot move forward, seek another assessment from a healthcare professional. Persistent screen intolerance is not always resolved simply by accumulating more screen time.

There are many reasons progress can stall. A concussion may affect the eyes' ability to focus or work together. Eye-movement control, eye-muscle function and visual endurance may be reduced. Convergence insufficiency—the inability to keep both eyes comfortably aligned on a nearby target—can make reading and computer work particularly difficult. Neck, vestibular, migraine, sleep and exertion-related problems can also contribute to symptoms that seem to come from the screen itself.

A detailed concussion assessment can help identify which systems are involved. Treatment may then include targeted visual or vestibular rehabilitation, cervical treatment, graded aerobic exercise, changes to work or school demands, or referral to another provider when appropriate. You can also read more about our approach to concussion management in downtown Toronto.

Remember that concussion recovery is not identical for everyone. Screen tolerance may return within days, but for some people it can take months or even years to normalize fully. The principle behind the protocol matters more than reaching a particular hour target on a particular day: challenge the visual system gradually, monitor the response and adjust the dose without abandoning the process.

Be consistent. Be patient. Get help if progress has stalled.

Book a concussion assessment in downtown Toronto

If headaches, dizziness, eye fatigue, brain fog or other symptoms are making it difficult to return to screens, work or school, a structured assessment can clarify what is limiting your recovery.

BACK IN BALANCE Clinic provides concussion assessment and rehabilitation at 2 Carlton Street, Suite 1306, steps from College Station in downtown Toronto. Care may include vestibular and oculomotor assessment, cervical evaluation, exertion testing and an individualized return-to-work, return-to-school or return-to-sport plan.

Book a concussion assessment

References

  1. Macnow T, Curran T, Tolliday C, et al. Effect of Screen Time on Recovery From Concussion: A Randomized Clinical Trial. JAMA Pediatrics. 2021;175(11):1124–1131. doi:10.1001/jamapediatrics.2021.2782
  2. Cairncross M, Yeates KO, Tang K, et al. Early Postinjury Screen Time and Concussion Recovery. Pediatrics. 2022;150(5). doi:10.1542/peds.2022-056835
  3. Yang J, Alshaikh E, Asa N, et al. Exploring the association between cognitive activity and symptom resolution following concussion in adolescents aged 11–17 years. British Journal of Sports Medicine. 2024;58(6):328–333. doi:10.1136/bjsports-2023-107601
  4. Patricios JS, Schneider KJ, Dvorak J, et al. Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport–Amsterdam, October 2022. British Journal of Sports Medicine. 2023;57(11):695–711. doi:10.1136/bjsports-2023-106898