Optical illusion: Girl in inverted colors

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

Photos of Mind-Boggling Optical Illusions and How They Work

The Illusions Index - The Illusions Index

Stare at Red dot illusion, Curious Case of the Red Dot: This 'insane' optical illusion will turn all your surroundings hazy

Four optical illusions and the science behind them

The video has hidden and moving 3D objects. To see them unfocus your vision and stare through the screen without focusing on the picture. When the repeating pattern snaps you will see

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

Psychologist shares optical illusion that turns a black and white image into colour

25 Optical Illusions That Prove Your Brain Sucks

Optical Illusion Definition & Types - Video & Lesson Transcript