Because an ocular migraine is not common, scientists are still learning just what causes them. Research has shown that this type of migraine might share some triggers with epilepsy, including flashing lights and electronic screens. Other possible triggers include fluorescent lighting, long-distance traveling and other events that require long periods of visual attention. Finally, stress, dehydration, low blood sugar and excessive heat has been shown to increase the likelihood of being struck by an ocular migraine.

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