You may have come across interesting illusions on the web, in the media, or in your own research. We are grateful for suggestions of additional illusions to include in our Index.

To suggest an illusion, please complete the form on the right, giving as much information about the illusion as you know. In particular, pleaselet us know where you found out about the illusion. We will then consider it for inclusion it in the Index.

Note that by submitting information you are giving us permission to include it, or adapt it for inclusion, in The Illusions Index. We will, however, endeavour to credit all sources and submissions accordingly.