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by sangnoir 1888 days ago
Yeh, for me, it's the eye strain from my eyes trying to "focus" on an image that's already focussed (and impossible to resolve the way my brain thinks it should be). This is similar to the Buscemi-with-four-eyes picture[1] - it tricks your eyes into continually changing focal distance in an attempt bring the picture into focus. It is physically straining your eye muscles.

1. https://i.pinimg.com/originals/85/21/c9/8521c9f0eefb09245edf...