It seems that ophthalmic (eye) migraines are quite common and often painless, although "migraine" usually makes us think of a severe type of headache.
But with eye-related or ocular migraine, vision can be disturbed with or without headache and can come along with the migraine processes possibly caused by changes in blood flow within the brain.
These types of visual problems associated with migraines are known as ophthalmic migraines, but are much more commonly called ocular migraines.
It has long been understood that migraines can be produced by the body's neurological responses to certain triggers such as hormonal changes, flashing lights or chemicals in foods or even some medications. A result of one of these triggers might be an intense headache that, if no treatment is given, can last for hours or even days.
During the migraine processes, changes may also take place in blood flow to the area of the brain responsible for vision that in turn result in ophthalmic or ocular migraines which actually can produce visual symptoms even without a headache.
Hope that helps Raj!
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