Have you ever seen visions right after you close your eyes?

That sounds like hypnagogic images which are experienced just before falling asleep. I experienced them quite vividly as a child when they kept me awake at night. They no longer bother me and I rarely experience them nowadays.

Like @flutherother < I remember having that but more when I was younger than now.

Yes. At least two types.

One type is not “light that was there just before the eyes are closed” per-se, but are built up signals on the optic nerves.

Another type is what @flutherother mentioned: hypnogogic experiences, which I would say are essentially dreams starting up before one is fully asleep. I have seen more and more of these the more I have developed my practice of paying attention to dreams and remembering, recording, and staying lucid and not waking up while experiencing them (whether asleep or not asleep).

Years ago, I would get them at least 30 minutes after sleeping. It does not happen to me anymore.