Healing Grid Optical Illusion
The grid presented below looks normal in the center section but “broken” on the left and right sides. Stare at the center of the rectangle for 15-30 seconds and notice what happens to the “broken” portions of the grid. Do they seem to repair themselves before your very eyes?
Ryota Kanai from Utrecht University in The Netherlands discovered this illusion. It was also a finalist in the 2005 Best Illusion of the Year Contest.