How to lower screen brightness for migraine

Updated 2026-11-02

Quick answerLower brightness until the screen matches the room, then fine-tune. Use OS sliders first; browser overlays can darken web pages further but cannot change a monitor’s real backlight. Matching ambient light has clearer support than extreme dimming alone. 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.

OS

  1. Use the hardware brightness keys or Display settings.
  2. On phones, try accessibility reduce-white-point style options if available.

Browser

  1. Migraine Mode dim for web pages.
  2. Avoid stacking five dimmers.

Evidence pointer

  • Main 2000 and later display-luminance work support matching ambient light.

Limit

  • Cannot fix PWM behaviour of the panel.

FAQ

Why does minimum brightness still hurt?

Some panels use PWM; try higher brightness with a software dimmer or a DC-dimming display.

Is darker always better?

No. Too dark raises contrast strain for some readers.

Sources

  • Main A, Vlachonikolis I, Dowson A. The wavelength of light causing photophobia in migraine and tension-type headache between attacks. Headache 2000;40(3):194–199. Link
  • Investigation of the optimum display luminance of an LCD screen under different ambient illuminances in the evening. Applied Sciences, 2021. Link
  • Optimum display luminance dependence on ambient illuminance. Optical Engineering, 2017. Link
  • Fani M, Sharp N, Schwedt TJ, et al. Reducing light sensitivity during and between migraine attacks: a prospective study investigating spectral tuning of white light. Cephalalgia 2026. 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.