Ophthalmic migraines, also called retinal or ocular migraines, cause temporary disturbances in vision that usually affect only one eye. Symptoms may include nausea, vomiting, dizziness, and visual disturbances such as light sensitivity, floaters, mysterious reflections, blurred vision, double vision, or flashes of light that appear as jagged lines.
Ocular migraines occur when blood vessels in the brain constrict, reducing blood flow to the eyes. Although the exact cause is not well understood, migraines may have some basis in genetics, as 80% of sufferers have a family history of migraine. Stress and hormonal imbalances may also be a factor, as well as fatigue, emotional disturbances, certain medications or foods, excessive noise, and changes in the daily routine.