Many people experience visual disturbances that start as a small flickering spot, then expand into a shimmering zigzag arc before fading. This is a typical migraine aura.
Typical features of migraine aura
- Zigzag, shimmering or sparkling lines
- A blind spot that slowly grows and moves across vision
- Lasts about 5 to 60 minutes, then fully resolves
- Seen with either eye closed, because it starts in the brain
- May be followed by headache, or occur without one
Seek urgent care if
- This is the first time, especially if you are over 50
- Vision loss is in one eye only
- Symptoms last longer than an hour or do not fully resolve
- You have weakness, numbness, confusion or trouble speaking
- You see flashes with a shower of new floaters or a shadow
These can indicate a stroke, a retinal problem or another serious condition.
Managing migraine
- Keep a diary of triggers, such as sleep loss, missed meals, stress and certain foods
- Discuss treatment and prevention with your doctor
- Have an eye exam to rule out other causes
Frequently asked questions
Can migraine damage my eyes?
Typical migraine aura does not damage the eyes, but new or unusual symptoms should be checked.
What is a retinal migraine?
A rare type causing temporary vision loss in one eye. Because other serious conditions cause similar symptoms, it needs urgent assessment.
Sources
This article is for general information and does not replace an examination by an eye doctor. If you have symptoms, please book a consultation.