Once again we come back to talk about “Magic Eye”, a kind of very particular optical illusion to understand that gained a peak of popularity in the 90s. Also formally referred to as “autostereograms“, the latter are intended to create a three-dimensional optical illusion from a two-dimensional image.
Although they were popular more than 20 years ago, these works have often been used by scientists for decades to study depth perception. A stereogram – in very few words – is an image which, seen with two eyes, produces the illusion of depth perception. By making your eyes see these images in a certain way, a three-dimensional scene is visible.
Precisely for this reason, stereograms were initially used for the first time in the study of human depth perception, in particular the way in which our eyes see different images and our brain creates a single coherent one. Human pupils are usually 66mm apart, which causes each eye to see slightly different images.
What to see in this work? You can see it (and study it) at the bottom of the news (as always!) and answer the question in the comments section. A bit like traditional optical illusions, there are many types of autostereograms and each of them is developed according to a particular perception technique.