I have begun having ocular migraines. They come on suddenly with lights and colors, cover both eyes and last about 15 minutes. Only mild headache if any and then I feel weak afterwards.
I did have an MRI, CAT scan, and other tests, as well as opthmalogist exam to rule out other causes. It's a good idea to get everything checked out just to be sure. I saw a neurologist also. There doesn't seem to be anything they can do about them, at least I haven't found an answer yet.