Ocular migraine and screens: aura, retinal migraine and red flags

Updated 2026-11-02

Quick answer'Ocular migraine' is not a formal diagnosis. It usually means migraine with visual aura, such as zigzag lines in both eyes, or retinal migraine, which affects one eye. ICHD-3 defines both. Sudden vision loss, especially in one eye, needs urgent medical assessment, because other conditions can look similar.

Definitions

  • Migraine with aura: reversible visual, sensory or other symptoms that develop over minutes (ICHD-3 1.2).
  • Retinal migraine: repeated, fully reversible visual symptoms in one eye (ICHD-3 1.2.4).

Screens during aura

  • Stop and rest if you can; reading during aura is hard.
  • Dim the screen and reduce flashing content.

When to get help

  • NHS: loss of vision with a headache is an emergency.
  • See a doctor urgently for a sudden severe headache, new weakness, trouble speaking, loss of vision or confusion (NHS).

FAQ

Is ocular migraine dangerous?

Aura is usually harmless, but new or one-eye vision loss must be checked by a doctor.

Can screens cause aura?

Bright or flickering light is a reported trigger, but provocation studies rarely trigger aura.

Sources

  • ICHD-3: 1.2 Migraine with aura. Link
  • ICHD-3: 1.2.4 Retinal migraine. Link
  • Hougaard A et al. Provocation of migraine with aura using natural trigger factors. Neurology, 2013. Link
  • NHS. Headaches: when and where to get medical help. 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.