Can Migraine Cause Vision Problems? What to Know

What is a migraine aura, and what does it look like?

Migraine with aura affects a meaningful portion of people who have migraines, though most migraines worldwide occur without aura. An aura typically develops gradually over five to twenty minutes, lasts less than an hour, and then fully resolves.

Common visual aura experiences include: - Scintillating scotoma — a crescent-shaped shimmering or flickering region, often with a C-shaped or zigzag border, that slowly expands across the visual field - Positive visual phenomena — sparkling, flashing, or prismatic lights - Scotoma (blind spot) — an area where vision is missing, sometimes perceived as a gray or black patch - Hemianopia — loss of half the visual field in one or both eyes during the aura phase

The aura typically affects both eyes (because it originates in the visual cortex of the brain, not in the eye itself) and usually comes before the headache, though it can occur during or without one.

What is an ocular migraine?

The term "ocular migraine" is used loosely in everyday speech and can refer to two distinct conditions:

Migraine with visual aura (most common) — visual disturbances from cortical spreading depression in the brain's occipital (visual) cortex. Both eyes are affected because the disturbance is in the brain, not the eye.

Retinal migraine (rare) — visual symptoms that affect only one eye, caused by a transient reduction in blood flow to the retina. Retinal migraine is uncommon and requires careful evaluation to distinguish from other causes of monocular vision loss, including retinal artery occlusion or TIA. A retinal migraine diagnosis should only be made after other serious causes have been excluded 1Ref 1National Library of Medicine (2025).Migraine.Overview of migraine aura types and the distinction between visual aura and retinal migraine.

If you experience visual symptoms in only one eye, this distinction matters and warrants prompt evaluation by a clinician or ophthalmologist.

Can migraine cause temporary blindness?

During a severe aura, some people experience near-complete loss of vision in one visual field, which can feel like temporary blindness. This is genuinely alarming but, if it follows the typical gradual-onset, full-recovery pattern of aura and is associated with a known migraine history, it is generally not dangerous.

However, sudden, painless vision loss that does not follow this pattern — especially in only one eye, in an older adult, or in someone with cardiovascular risk factors — is a potential medical emergency. Retinal artery occlusion (sometimes called an "eye stroke") can present this way and needs immediate evaluation 2Ref 2Kovach JL (Chair), Bailey ST, Kim SJ, Lim JI, Vemulakonda GA, Ying GS, Flaxel CJ; AAO PPP Retina/Vitreous Committee (2025).Retinal and Ophthalmic Artery Occlusions Preferred Practice Pattern® 2024.Sudden monocular visual loss as a presentation of retinal artery occlusion requiring urgent evaluation.

Are visual symptoms ever the only migraine symptom?

Yes. "Acephalgic migraine" or "migraine equivalent" refers to the aura phase occurring without a headache following it. This is more common in people who had classic migraine with aura earlier in life and tends to increase after age 50. Because the visual disturbance occurs without the characteristic headache, it can be alarming and may initially be mistaken for a TIA or retinal problem.

A neurologist or ophthalmologist experienced in migraine can distinguish acephalgic migraine from TIA, retinal artery occlusion, or other causes of transient visual disturbance. The evaluation typically includes a thorough neurological and vascular history, and often imaging.

When do migraine visual symptoms need urgent evaluation?

Most migraine visual auras are benign and do not require emergency care. A Gale primary care clinician or neurologist can help manage them. However, seek prompt evaluation if:

• Visual symptoms affect only one eye
• Vision loss is sudden rather than gradual
• Visual symptoms do not fully resolve
• You have new neurological symptoms alongside the visual disturbance (weakness, numbness, speech difficulty)
• You are over 50 with no prior migraine history and develop new visual disturbances
• You have significant cardiovascular risk factors and a new episode of monocular vision loss

Ongoing migraine management — including preventive therapy when appropriate — can reduce both the frequency of headaches and their associated auras 3Ref 3Silberstein SD, Holland S, Freitag F, Dodick DW, Argoff C, Ashman E (2012).Evidence-based guideline update: Pharmacologic treatment for episodic migraine prevention in adults.Preventive migraine medications reducing headache and aura frequency4Ref 4Charles AC, Digre KB, Goadsby PJ, Robbins MS, Hershey A; American Headache Society (2024).Calcitonin gene-related peptide-targeting therapies are a first-line option for the prevention of migraine: An American Headache Society position statement update.Prevention options to reduce migraine frequency including visual aura.