Ocular migraines have similar triggers as migraine with aura. Common triggers include: High blood pressure (hypertension) Hormonal contraceptive pills Low blood sugar (hypoglycemia) Alcohol and caffeine.

Like migraines, ocular migraines can be triggered by a variety of things. Some examples include: Lights, sounds, or smells Looking at a computer screen or reading for long periods of time Certain foods like nitrates or MSG Changes in weather or barometric pressure Hormonal changes Dehydration

Currently, there is limited research on what causes ocular and visual migraines. The exact cause of ocular migraines is still unclear. However, studies have shown a change in blood flow into the eye during ocular migraines. This provides insight on how it occurs. However, it might be a hereditary condition, meaning it runs in families.