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The Lilac Chaser illusion is a striking visual phenomenon. It consists of a circle of lilac-colored discs, with one disc disappearing in sequence. If you stare at the central cross, you may notice a green disc moving around the circle and the lilac discs seem to fade away. This illusion demonstrates several effects:
How to view: Stare at the central cross for several seconds. Try adjusting the controls above to see how the illusion changes. The green disc and fading effect should become more pronounced the longer you fixate.
This interactive demo lets you experiment with the illusion's parameters. For best results, use a neutral background and avoid moving your eyes from the center cross.