Migraine, ophthalmic

Definition: 
Migraine involving the eyes but without headache. Migraine, due to a spasm of blood vessels in the brain, usually causes a headache. Flashes of light may appear as jagged lines or "heat waves" in one or both eyes and often last 10-20 minutes, sometimes without a headache. This is termed ophthalmic migraine, or migraine without headache.
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