system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What image quality do our eyes see in? Is it possible to give this a value in pixels? If not, how does our brain process each tiny piece of colour?
gpt
Your highest angular resolution is about 1 minute of arc(20/20 vision), and your vision spans 114 degrees so that's roughly 6840 "pixels" wide, but you don't get this  resolution across the whole field of vision. You have really good central vision with far worse resolution and color sensitivity on the peripheral vision so the real resolution will be more along the lines of 4000 wide with it being much better in the middle.

Your eye has rods(light/dark sensors) and cones(color sensors). Each cone only sees one color and is grouped with other cones of different colors so you can treat each triple group of cones as a pixel. Each rod is a pixel on its own but generally doesn't function in daylight. Rods are very sensitive to light and tell you if it's light or dark but in bright lights they get overwhelmed and stop.

Your brain receives signals from all your rods and cones and processes it into an understanding of your surroundings, ignoring things it finds not helpful (a closed eye or the side of your nose)