At first blush, the question seems absurd. But a new tool developed by Kazunori Asad, a Japanese vision expert, breathes fresh life into the seemingly-preposterous theory.

Asad says he first noticed certain characteristics of van Gogh’s work could indicate colorblindness while giving a speech in Hokkaido, Japan, on color deficiencies. An exhibit there cast the artist’s masterpieces in various lights, attempting to replicate how they’d be perceived by people with one or more defective sets of cones, a structure in the eye used to view color.

As he examined the works, he was startled to find the “normal” and the “colorblind” versions weren’t all that different. And in some cases, Asad says, the colorblind reproduction was actually better.

Asad explains on his blog, “In the van Gogh images seen in the color vision experience room, to me the incongruity of color and roughness of line had quietly disappeared. And each picture had changed into one of brilliance with very delicate lines and shades. This was truly wonderful experience.”

Inspired, he helped develop ‘Chromatic Vision Simulator,’ an app for Android/iOS that simulates various color deficiencies, including van Gogh’s speculated “protanopia,” (the lack of a red cone).

He then ran many of van Gogh’s celebrated works through the colorblindness filter, and while he cautions the simulation isn’t exact, it is “a useful starting approximation.”


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