The internet is going crazy over this girl's eyes in a optical illusion

If you're in the mood to trick your brain, this optical illusion will definitely give it a workout.

This is a photo of a girl you are likely to perceive as having a right eye that is light blue and a left eye that is yellow. But, as it turns out, they were both made using the same exact hue of gray.

The image was created by Akiyoshi Kitaoka, an experimental psychologist at Ritsumeikan University in Japan who specializes in optical illusions.

RELATED: Photos of optical illusions

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Optical Illusions

TONED ARMS

Queen Bey certainly doesn't need the extra strength training, but her post-pregnancy style involved lots of three-quarter-length sleeves, which elongate arms and disguise any excess flab. 

STREAMLINED MIDSECTION

If you're worried about a little extra tummy peeking out from your jeans, opt for a high-waisted pair that will skim over any worrisome areas. Claudia Schiffer pairs hers with a plaid shirt for a casual look. 

SLIMMER THIGHS

For thighs that appear smaller than they are, choose a pair of wide leg trousers that draw attention downward, like Jennifer Hudson's sleek pair. 

TALLER

Pick a short dress in a solid color like Selena Gomez's here, to appear longer.

LONGER LEGS

For a long-stemmed look, pair nude pumps with bare legs to make them seem like they go on for miles. Choose a pair that matches your skin tone - a classic trick of the eye!

SLIMMER ALL OVER

A pair of plain, non-distressed, good ol' denim streamlines just about everything and won't draw attention to any insecurities. Reese Witherspoon knows what we're talking about! 

BIGGER EYES

Lauren Conrad must know that a classic cat-eye is the surest way to open up eyes and make them appear bigger than they are. 

DEFINED CHEEKBONES

Kim Kardashian is the queen of contouring, which is what cheekbones are all about. Use a contouring brush to sweep bronzer in the hollows of your cheeks, along your hair line, and over the bridge of your nose. Voila - instant cheekbones! 

SMALLER BUST

For a smaller-looking bust-line, wear a scoop-neck top like Sofia Vergara's. It draws attention upwards! 

SMALLER NOSE

Stars like Kaley Cuoco have admitted to learning this trick in the makeup artist's chair! Apply foundation one shade darker than you would normally wear to both sides of your nose and blends towards cheekbones. Then apply a highlighter to the bridge, which is the thinnest part of the nose, for an all-around slimmer look! 

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In his image, it's clear to us that each of the woman's eyes are identical, despite the differing colors in the background. But what's bizarre about this image is that we also perceive the eyes as different colors despite them both being gray.

This effect is due to a phenomenon called color constancy -- the ability to perceive colors of objects, invariant to the color of the light source.

SEE ALSO: Optical illusion of two girls freaks out the internet

Basically, in processing the two different backgrounds, your brain is working to make sure the colors you are perceiving remain, well, constant. And with Kitaoka's strawberry illusion that stumped the internet, it was the same thing.

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