---
title: "Ocular migraine (migraine with visual aura)"
description: "What an ocular migraine is, why you see zigzags or shimmering lights, how long it lasts, and the warning signs that need urgent checking."
url: https://eyehealthguide.org/conditions/ocular-migraine/
source: Eye Health Guide
licence: "General information only. Cite the URL and the named medical reviewer."
---

Condition

# Ocular migraine (migraine with visual aura)

Medical reviewer [Mr Mohamed Mohyudin](https://eyehealthguide.org/reviewers/mohamed-mohyudin/)· Last recorded site review July 6, 2026

### About this review

This page inherits the site’s previous review record. A separate, current article sign-off has not yet been recorded.

[How review works](https://eyehealthguide.org/reviewers/) · [Official biography & credentials](https://mohamedmohyudin.co.uk/author/mohamed-mohyudin/)

Quick answer

An ocular migraine, or migraine with visual aura, causes temporary visual disturbances such as zigzag lines, shimmering, or a blind spot, usually lasting under an hour. It is generally harmless and may or may not be followed by a headache. Sudden lasting vision loss, especially in one eye, needs urgent assessment.

### On this page ⌄

1. Your next step
2. What it is
3. Common symptoms
4. Causes and triggers
5. When to seek urgent care and management
6. Related symptoms
7. Frequently asked questions

## What it is

An ocular migraine is a type of migraine aura that affects your vision. It usually causes spreading visual patterns in both eyes that build up and then fade, typically over 20 to 60 minutes. It is generally harmless and the vision returns to normal afterwards.

## Common symptoms

Visual symptoms usually develop gradually and then settle.

- Flickering or shimmering zigzag lines
- A blind spot or patch that may slowly enlarge
- Bright or coloured shapes in the vision
- Symptoms lasting up to about an hour, sometimes followed by a headache

## Causes and triggers

Ocular migraine is caused by temporary changes in the brain's visual pathways. Common triggers include stress, tiredness, missed meals, dehydration, certain foods, bright lights, and hormonal changes.

## When to seek urgent care and management

Seek urgent assessment if you have sudden lasting vision loss, especially in one eye, vision changes that do not fully recover, or symptoms alongside weakness, numbness, slurred speech, or a different, severe headache, as these can signal a more serious problem. Otherwise, managing triggers and following migraine treatment advice usually helps.

## Related symptoms

## Frequently asked questions

### Is an ocular migraine dangerous?

Migraine visual aura is usually harmless and settles within an hour. However, sudden lasting vision loss, especially in one eye, or symptoms with weakness or speech changes, need urgent assessment.

### How long does an ocular migraine last?

The visual disturbance usually lasts up to about an hour and then fades, sometimes followed by a headache. Vision typically returns to normal afterwards.

### What triggers ocular migraines?

Common triggers include stress, tiredness, missed meals, dehydration, certain foods, bright lights, and hormonal changes. Keeping a diary can help you identify yours.

Your next step

## Take this to your appointment

Write down what has changed, when it started, your current medicines and the questions you want answered. Take these to your eye-care appointment.

Sudden loss of sight, severe eye pain or a dark curtain across vision needs immediate assessment. Do not wait to complete a worksheet.

## Sources for this information

These references support the information on this page. Follow the linked source for its full context.

- [NHS - Retinal migraine](https://www.nhs.uk/conditions/retinal-ocular-migraine/)