Vision Loss in One Eye
Ocular migraines distinguish themselves from migraine auras (a harmless condition) by affecting only one eye. This vision loss usually begins with a small blind spot (or scotoma) [5]. This spot affects the central vision in one of your eyes. Within a short time, the blind spot gets large until it significantly impairs your vision. Sometimes this can affect the entire visual field and result in temporary blindness.
Vision loss due to ocular migraines usually resolves on its own within one hour. Sometimes it can be hard to tell if the visual impairment is happening in just one eye. In this case, you should cover your eyes one at a time to be certain only one eye is affected.
If you suddenly experience vision loss in one eye, don’t simply assume it’s due to ocular migraine except you’ve been properly diagnosed. Sudden monocular vision loss or blind spots may be indicative of serious eye problems such as retinal detachment.