I'm seeing stars!

It's really too bad that it's not possible to take a picture of things that I see but that are not really there. I had an eye exam today, including the usual process of dilating my pupils. That was at about 2 in the afternoon. I experienced the usual "light overload" as I drove back to the office with my eyes sporting pupils that were much bigger than normal. Then as I headed for home at a little after 5, I noticed something unusual. Bright lights - headlights, brake lights (but not tail lights), and turn signals - all had lines radiating from them as if they were stars. I don't remember ever experiencing that before. It was definitely an interesting way to experience bright lights, and I really wish I could have captured it with a picture...