On a few occasions, when I am just waking up, I will see an image in my still closed eyes.
It is always a complex, symmetrical pattern.
I have seen five, and six pointed stars, which are always very steady images.
The most recent image has been squares within squares. ( I will have to do some drawings, and add them at a later date )
This is not dream, or imagination, as the shapes do not change colour, or shape.
I would say similar to when you stare at a bright light, and there is an after-image, but the image from a light quickly fades.
These patterns stay for around 15 to 30 seconds, and are crystal clear.
If anybody else has had a similar experience, I would be very interested.
Cheers,
Phil