I frequently have these retinal migraines; so does my sister. I'd say their drawing is quite accurate. In my personal experience: * their grayish color are way

I frequently have these retinal migraines; so does my sister. I'd say their drawing is quite accurate. In my personal experience: * their grayish color are way more yellow/white * it often forms a fully closed circle/potatoid * the inside is filled with void -no visual information, which the brain will fill with its own guess- * I don't get a headache afterwards, but my sister does * I often get them when playing sports * I once got one while looking at a bright LED spot * they can grow to the whole field of view * the vision reappears gradually from the center, where it started * it always affects both eyes at the same time, but with a different pattern in each * I don't know if it's related: my sister and I both have the Photic sneeze reflex I wanted to post so that I can share what works for me and my sister: The loss of visual field may not seem like much, but it is very dangerous. Your brain auto-fills it, and you won't grasp how much you don't see. Do not ride a bike, or take the car! Triple check the trafic when crossing the street! Do rehydrate yourself the earliest you can with something like a pop/soda/coke. I don't know wether if it's the water or the calories or the combination of both, but it has to be water with sugar. Usually the patterns will start to fade away 5-10mn in, and will be completely gone by the 25th minute. This is not medical advice, but: if you know you will suffer from a headache afterwards, do take paracetamol/acetaminophen the earliest you can as well. At the first sign of the yellowish visual disturbance. It will usually prevent the headache. If you do not take it early, once the headache has set in it will not go away for a long time. [1] https://en.wikipedia.org/wiki/Photic_sneeze_reflex https://en.wikipedia.org/wiki/Photic_sneeze_reflex