Why does the ceiling distort when you stare at it for a few seconds without blinking?

Question

Why does the ceiling distort when you stare at it for a few seconds without blinking?

In: Biology

Answer 1

Because when your eyes see nothing, it tries to make something out of nothing. Same reason why a pile of clothes looks like a person in a dark room.

Answer 2

Have you done LSD or other psychedelics? You have HPPD.