An ocular migraine causes vision loss or visual disturbance that lasts less than an hour and typically affects only one eye. It has also been called optical migraine, visual migraine, retinal migraine, ophthalmic migraine, or visual aura; however, the correct name and classification according to the International Headache Society is migraine aura without headache. You may find these blog posts of interest: https://www.axonoptics.com/2018/07/ocular-migraine/ https://www.axonoptics.com/2015/06/light-triggers-migraines/ https://www.axonoptics.com/2012/04/difference-between-optical-migraine-and-ocular-migraine/