Optical illusion: Girl in inverted colors

1. Stare at the red dot for 30 seconds. 2. Look at a white wall and start blinking.

The Best Optical Illusion Art on the Internet

12 optical illusions that show how colour can trick the eye, The Independent

AI Optical Illusion - Imgur

Bizarre optical illusion tricks you into seeing brunette woman on the wall using genius 'brain hack

Optical illusion pictures: All the best mind-bending images from around the world

Your Brain Develops The Negative – Webvision

10 mind-melting optical illusions that will

Invert color hi-res stock photography and images - Alamy

This optical illusion transforms a negative image into full colour - but can you see it?

Optical illusion turns black and white images into COLOUR

Fun with Ambiguous Images - Art of Play

Face illusions