![]() It may be difficult to read and dangerous to drive a vehicle while retinal migraine symptoms are present. ![]() After each episode, normal vision returns. ![]() Visual loss tends to affect the entire monocular visual field of one eye, not both eyes. During some episodes, the visual loss may occur with no headache and at other times throbbing headache on the same side of the head as the visual loss may occur, accompanied by severe light sensitivity and/or nausea. Retinal migraine is associated with transient monocular visual loss ( scotoma) in one eye lasting less than one hour. Visual migraines result from cortical spreading depression and are also commonly termed scintillating scotoma. Ocular or retinal migraines happen in the eye, so only affect the vision in that eye, while visual migraines occur in the brain, so affect the vision in both eyes together. The aura phase of migraine can occur with or without a headache. The terms "retinal migraine" and "ocular migraine" are often confused with " visual migraine", which is a far-more-common symptom of vision loss, resulting from the aura phase of migraine with aura. It is caused by ischaemia or vascular spasm in or behind the affected eye. Retinal migraine is a retinal disease often accompanied by migraine headache and typically affects only one eye. ICHD classification and diagnosis of migraine.Stress, smoking, high blood pressure, oral contraceptive pill, exercise, bending over, high altitude, dehydration, low blood sugar, excessive heat
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