system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we see “imprints” of a bright light when we blink even after we look away from it?
gpt
Ever whack your hand so bad that it went numb for a bit and then stung for a while, but nothing was actually wrong with your hand, like it was better an hour later?

Basically the same thing.

The nerves in your hand got whacked so hard that they have a hard time resetting back to the non-activated state. Same kind of thing happens with the photoreceptors in your eyes.