About half of people who get these migraines will lose sight in one eye for a few minutes. In the other half of cases, the symptoms are a bit less dramatic, such as:
Partial vision loss
Blank spots in your vision, called scotomas
Flashes of light
Ocular migraines are usually brief, lasting less than 5 minutes. But they can last up to 30 minutes. Forty-one percent of people have a headache during the vision loss, and 25% have it before or after.