What Is Retinal Migraine, And How Is It Different From A Typical Visual Migraine Aura?

You’re at your desk, and out of nowhere the vision in one eye starts to shimmer, or a patch of it disappears. You close your other eye to check, and the flicker or blind spot is still there. A few minutes later it fades, but a headache builds behind that same eye.

This kind of episode, a visual disturbance limited to one eye, has a name: retinal migraine. It’s one of the least common and most misunderstood forms of migraine, in part because it’s so often confused with a much more familiar experience: migraine with aura.

Retinal migraine is different from a visual aura

Migraine with aura is far more common, and it can look similar at first glance: flashing lights, zig-zag lines, blind spots. What actually separates the two is which eye is affected. Migraine with aura shows up in both eyes at once, because it starts in the visual processing areas of the brain, even when someone describes it as happening “in one eye,” the disturbance is actually present across the same side of vision in both eyes.[1] Retinal migraine affects only one eye, because the disruption is thought to happen in the retina itself, the light-sensitive layer at the back of the eye that captures what you see and sends that signal to the brain, or in the blood vessels that feed it.[2] The good news is you don’t need a doctor’s office to check yourself.

One eye or both? During an episode, cover one eye at a time. If the disturbance is still there no matter which eye you cover, it’s affecting both eyes, and points toward migraine with aura. If it disappears when you cover the affected eye, it’s limited to one eye, and worth having checked by an eye doctor.

A 2025 review pulling together 65 studies on this topic found that retinal migraine episodes were monocular in about 90% of cases, with a blind spot reported in 84% and some degree of temporary vision loss in nearly all cases, most lasting under 60 minutes. Migraine with aura followed a different pattern: symptoms appeared on both sides of vision in about 75% of cases, more often involved flickering or zig-zag shapes than blind spots, and also tended to last five to 60 minutes.[1]

How it’s diagnosed

To be diagnosed with retinal migraine, a person needs to have had at least two attacks, with the visual change confirmed as affecting only one eye, either through an eye exam during an episode or by drawing exactly what the blind spot looked like.[2]

Because this involves ruling out other, sometimes more serious causes of one-eyed vision changes, it isn’t something to self-diagnose from a symptom list. Please talk to your doctor or an eye specialist so you get the correct diagnosis and treatment for what you’re experiencing.

What causes it

The exact cause isn’t fully understood. The leading explanation is a temporary narrowing of the blood vessels that supply the retina, briefly reducing blood flow to that eye.[2] The triggers linked to retinal migraine are largely the same ones associated with migraine in general:[2]

stress hormonal changes dehydration or skipped meals poor sleep bright light or screen glare alcohol shifts in weather

How rare is it, really

Retinal migraine is considered rare, though its true frequency is hard to pin down. A 2007 review of 142 published cases of one-eyed vision loss found that only five actually met strict diagnostic criteria for retinal migraine once reviewed closely; most of the rest were attributed to other causes.[3] Much of what gets called “retinal migraine” in casual conversation is something else, most often migraine with aura, or another condition entirely.

When it’s worth a same-day visit

Retinal migraine is what’s called a diagnosis of exclusion: it can only be confirmed once other causes of one-eyed vision changes have been ruled out.[2] That means a first episode deserves prompt medical attention rather than an assumption that it’s migraine. Conditions like retinal detachment or a temporary interruption in blood flow to the eye can look similar in the moment but need different, sometimes urgent, treatment. If vision loss in one eye is complete, doesn’t resolve within about an hour, or is happening for the first time, treat it as urgent and seek care the same day.[4]

What does treatment look like

There’s no single established treatment protocol for retinal migraine.[2] Once an episode starts, it typically needs to run its course, and vision usually returns to normal within the hour. For ongoing prevention, healthcare professionals sometimes draw on the same preventive approaches used for other forms of migraine, alongside the trigger management described above, though the right approach depends on your full health picture and should be worked out with a doctor rather than self-managed.

In rare, isolated cases, retinal migraine has been linked to lasting vision changes in the affected eye; how often this happens isn’t well understood, and there’s currently no way to predict who might be affected.[2] That uncertainty is one more reason repeated episodes are worth bringing to a specialist rather than assuming they’ll always resolve on their own.

What to discuss with your healthcare professional

Because episodes are brief and can feel disorienting while they’re happening, the details are easy to lose track of afterward. Before an appointment, it can help to have a clear answer to a few questions:

which eye was affected how long the episode lasted whether a headache followed, and how soon what was going on in the hours before it started

Logging this in Migraine Buddy as soon as possible after an episode can make those details easier to recall accurately, especially if it happens more than once. That record can support a more informed conversation with an eye doctor or neurologist about what you’re experiencing and what to check next.

Do not stop or change any medication without medical guidance. Because retinal migraine involves the eye specifically, both a neurologist and an ophthalmologist may have a role in figuring out what’s going on.

Disclaimer: This content is for educational and informational purposes only. It is not intended as medical advice. Always speak with a qualified healthcare professional about your symptoms and treatment options.

References

[1] Nordin BA. (2025). Differentiating Visual Symptoms in Retinal Migraine and Migraine With Aura: A Systematic Review of Shared Features, Distinctions, and Clinical Implications. Cureus, 17(8), e91028. https://doi.org/10.7759/cureus.91028

[2] Al Khalili Y, Jain S, King KC. (2023). Retinal Migraine Headache. In: StatPearls [Internet]. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK507725/

[3] Hill DL, Daroff RB, Ducros A, Newman NJ, Biousse V. (2007). Most cases labeled as “retinal migraine” are not migraine. Journal of Neuro-Ophthalmology, 27(1), 3-8. https://doi.org/10.1097/WNO.0b013e3180335222

[4] Mayo Clinic. Ocular migraine: When to seek help. https://www.mayoclinic.org/diseases-conditions/migraine-headache/expert-answers/ocular-migraine/faq-20058113