Eli5: Why does the human visual field seem to disappear when staring at something for an extended period of time without blinking the eyes?
In: Biology
You eye blurs foreground and background accordingly to sharpen the image of whatever it is you are looking at. So as you stare at a tv screen the wall and surroundings become blurred and you dont pay attention to it so your eyes can give you a better image of what you are watching.
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