How to reduce screen flicker for migraine

Updated 2026-11-02

Quick answerReduce flicker by raising refresh rate when available, avoiding aggressive PWM brightness, and blocking flashing web content. Browsers cannot rewire a panel’s backlight driver. Evidence links temporal visual stress and migraine in lab settings; consumer fixes vary. Keep expectations modest.
Not medical advice. Migraine Mode is a screen-comfort tool, not a medical device. It does not diagnose or treat disease. When to see a doctor.

Hardware / OS

  1. Prefer higher refresh rates.
  2. Try brightness levels that feel steady.
  3. Disable fancy dynamic-contrast modes that pump backlight.

Browser

  1. Block autoplay; reduce animated ads.
  2. Migraine Mode helps with content motion more than panel PWM.

See also

  • /screen-flicker/
  • /pwm-dimming/

FAQ

Can an extension fix PWM?

No. It cannot change backlight modulation.

Do higher Hz displays help?

Some people prefer them; it is not a guaranteed migraine therapy.

Sources

  • Critical flicker frequency in migraine. A controlled study in patients without prophylactic therapy. Cephalalgia, 2005 (PubMed 15839848). Link
  • Miller NJ, Irvin L, Royer M, Strachan C. Visibility and annoyance of the phantom array effect varies with age and history of migraine. Lighting Res Technol, 2024. Link
  • Headache related to a specific screen flickering frequency band (case report). Cephalalgia, 2004. Link
  • W3C. Understanding WCAG 2.2 Success Criterion 2.3.1: Three Flashes or Below Threshold. Link

Not a medical device and not medical advice. Migraine Mode is a screen-comfort tool: it does not diagnose, treat, cure or prevent migraine or any other condition, and it does not replace a doctor. Its settings are based on studies of light, colour, flicker, patterns and motion; the extension itself has not been clinically tested. When to see a doctor.