Dr. Grosberg, Director, Hartford Healthcare Headache Center, Hartford Healthcare Neuroscience Institute, received honorariums from Alder, Allergan, Amgen, Biohaven, Neurolief, and Theranica as a member of advisory boards.)
Dr. Silberstein, Director of the Jefferson Headache Center at Thomas Jefferson University, received honorariums from Abbie, Curelator, Ipsen Therapeutics, Lundbeck Biopharmaceuticals, Supernus Pharmaceuticals, and Theranica for consulting. He is also the principal investigator for clinical trials conducted by Amgen, ElectroCore Medical, and Teva.)
Retinal migraine is usually characterized by attacks of fully reversible monocular visual loss associated with migraine headache. Retinal migraine is most common in women of childbearing age who have a history of migraine with aura. In the typical attack, monocular visual features consist of partial or complete visual loss lasting less than one hour. Although the current diagnostic criteria for retinal migraine require fully reversible visual loss, our findings suggest that irreversible visual loss is part of the retinal migraine spectrum. Nearly half of reported cases with recurrent transient monocular visual loss subsequently experienced permanent monocular visual loss.
Historical note and terminology
Retinal migraine is a rare and poorly understood disorder characterized by attacks of monocular visual impairment associated with migraine headache. Galezowski first described this entity as “ophthalmic megrim” in the late nineteenth century (Galezowski 1882). Since then, a number of patients with monocular visual defects beginning before, during, or after attacks of otherwise typical migraine have been reported with various designations. Carroll introduced the term "retinal migraine" to describe patients with episodes of transient and permanent monocular visual loss, specifically in the absence of migraine headache (Carroll 1970). Most subsequent observers have used the term “retinal migraine” for those cases of monocular visual impairment temporally associated with attacks of migraine. Some have noted that unilateral visual loss was not restricted exclusively to the retina and advocated the term “anterior visual pathway migraine” or “ocular migraine” (Walsh and Hoyt 1969; Corbett 1983). The authors prefer the term “migraine associated with monocular visual symptoms” because it distinguishes between the loss of vision in one homonymous hemifield and that of one eye and includes sites other than the retina, such as the choroid or the optic nerve.
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