system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the dot/shape in your vision after looking into a light or the sun?
gpt
The light-sensitive cells need a little while to regenerate before they can detect the next photon. If all fire at the same time in a spot, you basically have a "hole" in your vision for light, or the color you looked at, until the cells recovered.