An optical illusion posted on Reddit has left people arguing over the colour of two balls - and the original poster has branded it "the ultimate optical illusion" View Image The optical illusion left many people baffled (Image: Getty Images)

An astounding optical illusion shared on Reddit has left users divided over its authenticity. One person dubbed it "the ultimate optical illusion " due to the intense debate it sparked. ‌

The post is vertically divided into two sections, with the left side seemingly displaying a blue ball against a yellow backdrop, adorned with purple dots. The right side appears to feature a green circle against a purple background, speckled with yellow dots, reports the Mirror . ‌

However, the title of the post asserts the balls are identic

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