In 50% of cases, ocular migraines cause temporary but complete vision loss in one eye. In the other half of cases, ocular migraines can cause 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.
The symptoms of migraines include:
A brief period of depression, irritability, anxiety, moodiness, and decreased appetite as much as 24 hours before the onset of a headache
Symptoms of an aura an hour or less before head pain starts
A severe, throbbing headache, sometimes concentrated on only one side of the head or around one eye lasting between four and 72 hours
A headache that worsens with exertion
Nausea and vomiting
Extreme sensitivity to light, so painful to the eyes an...
If you get to the doctor during an ocular migraine, he or she will be able to see the decreased blood flow in your eye with a device called a fundoscope. However, since ocular migraines are fairly brief, it's more likely that you will be diagnosed based on your 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: