Magic of stereograms

A stereogram is an optical illusion of depth usually observed by allowing the eyes to focus behind an image (diverge), but also sometimes in front of the image (converge). The slight differences in vertical repetitions of figures or random dots create the illusion of depth in the 2D image, just as the slight difference in perspective between one’s eyes creates the perception of depth on 3D objects and scenes.

More on how to see stereograms.

Images credited by Jun’s Grafix Café & Niklas Eén.

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