![]() If you have recently experienced an ocular or visual migraine, here are six common triggers that may have contributed to the event: However, there are thought to be specific “triggers” that lead to ocular or visual migraines in people who are genetically predisposed to migraine headaches. Migraine auras are even more mysterious, with some experts indicating that they have something to do with electrical or chemical impulses in the brain. Scientists believe that ocular migraines have a genetic origin, but also that reduced blood flow to the eyes or spasms of blood vessels in the eye may cause them. The bad news is that determining the precise cause of these visual disturbances can be difficult. The good news is that both ocular migraines and visual migraines typically resolve within an hour or so. Both conditions can precede or accompany an actual migraine headache. Also known as a “migraine aura,” a visual migraine might leave a patient seeing flashing lights, shimmers, dots, wavy or zigzag lines, or other sensory disturbances. A visual migraine, contrary to popular belief, is indeed a different condition, characterized by visual disturbances. Alternatively, you may temporarily experience blindness in one eye. You may briefly develop a blind spot, where part of your field of vision in one eye becomes exceptionally blurry. An ocular migraine is typically characterized by a partial or complete loss of vision in one eye. Your optometrist or GP will also establish whether you have been affected by a visual disturbance or the less common and more serious retinal migraine.Ocular or visual migraines can be an alarming occurrence, especially if you are experiencing one for the first time. If you experience a partial or complete loss of vision or persistent flashing it’s important to see an optometrist or GP, or contact NHS 111 urgently, particularly when it occurs for the first time. If you are regularly affected by visual disturbance, take the diary of your symptoms to your optometrist for further advice. certain foods such as chocolate, cheese or alcohol.glare (bright sheen of light reflected from a window, computer monitor, or white paper). ![]() flashing or flickering lights (including driving through a row of trees in bright sunlight).Simply avoiding the trigger, where possible, may be all you need to do. In most cases, there is a common trigger and keeping a diary of symptoms can help work out what the trigger is. Make a note of your symptoms, how long they lasted and what you were doing just before they began. If you are driving or operating machinery, stop what you are doing and wait for the symptoms to go away. The visual disturbance last around 20-30 minutesįirstly, do not panic visual disturbances can be frightening, but in most cases are short lived.There is no headache during the disturbance.The disturbance affects your sight and both eyes are affected.They may be apparent when your eyes are shut.Typically described as a zigzagging pattern, or giving the appearance of shards of glass. ![]() They may be black and white or brightly coloured.These may start in the periphery of your sight, and become larger and more central (Some people experience the opposite, starting as a tiny dot centrally and become a bigger arc as they reach the periphery). ![]() What are the symptoms of visual disturbance?
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