In 50% of cases, ocular migraines cause temporary and dramatic visual disturbance. In the other half of cases, ocular migraines can cause lesser vision disturbances such as:
Partial vision loss
Scotomas, or a blank spots in your vision
Flashes of light
Ocular migraines are usually brief, lasting less than five minutes. However, they can last up to 30 minutes. Forty-one percent of people have a headache during the vision loss. Twenty-five percent have it before or after.
By Sari Harrar
A tiny twinge tells Kelli Smith, 40, that The Headache is coming. "I feel pressure behind my left eye. Then my pulse starts pounding in my left temple. It feels like a bruise if I touch it," she says. "I get nauseous. The pain becomes so sharp I have to lie down in a dark room."
Raw onion, red wine, cigarette smoke, motion sickness, an off-kilter sleep schedule, hormone swings, and even weather changes can set off the skull-busting pain that has tormented Smith since she was 17....
Since ocular migraines are fairly brief, it's likely that you will be diagnosed based on your recollection of symptoms.
The symptoms of ocular migraines are similar to those of other serious disorders, such as eye diseases and stroke. So your doctor will want to do a thorough evaluation. If you have any of the risk factors below, your doctor may run additional tests to rule out more serious conditions: