Ocular migraines, also known as visual or ophthalmic migraines, are a subtype of migraine headaches. They typically occur before or alongside a migraine headache and can cause vision loss for a short period of time, usually up to 20 minutes or so. Initially, patients may experience changes in their peripheral vision, distorted shapes, warped lines, blurriness, altered color perception, or flashes of light. Although the exact cause of ocular migraines is not fully understood, many doctors agree that they are likely caused by spasms in the retinal blood vessels. Treatment for ocular migraine typically involves migraine management and adjusting lifestyle factors to avoid triggers. Your doctor can help diagnose this condition and connect you with the right specialist.
Learn more about ocular migraines from the AOA here.