- by Medikoe Health Expert
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- Feb 14 2017
What are Retinal Migraine?
It is also known as an “Ocular Migraine”. A retinal migraine is rare, it affects vision in one eye only. This type of a migraine includes repeated bouts of short-lasting, diminished vision or blindness in one eye. It affects about 1 out of every 200 people who have migraines. Retinal migraines usually last for up to 1 hour and are followed by the return of normal vision.
It is caused by a reduction in blood flow to the eye when blood vessels narrow suddenly. After a migraine is over, your blood vessels relax and open up. This allows blood flow to resume and vision is then restored.
Factors that might trigger blood vessel narrowing and retinal migraines include:
• Bending over
• Birth control pills
• Excessive heat
• High altitude
• High blood pressure
• Low blood sugar
• foods that contain nitrates, such as sausage, hot dogs, and other processed meats
• foods with tyramine, such as smoked fish, cured meats, and certain soy products
• products that contain monosodium glutamate, including snack chips, broths, soups, and seasonings
• alcoholic beverages including certain beers and red wine
• beverages and foods with caffeine
A retinal migraine involve repeated attacks of certain visual disturbances. Symptoms occur in one eye:
• Seeing flashing, sparkling, or twinkling lights, A blind spot or partial loss of vision, Temporary blindness.
It may spread over 5 minutes or more and lasts for 6-60 minutes. Within 60 minutes the headache phase of a retinal migraine may begin. A headache lasts 4 to 72 hours on one side of the head. A headache may be pulsing or throbbing, moderate to severe in pain intensity and it can be worse by activities such as walking or climbing stairs. It may also cause nausea and vomiting and increased sensitivity to sound and light.
There are no diagnostic tests that detect a migraine. An ophthalmoscope is used to see decreased blood flow to your eye. A doctor conducts a general examination and reviews a personal and family medical history.
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