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This article has been mentioned by a media organization: Sabine Hossenfelder (August 22, 2020). "Flat Earth "Science" -- Wrong, but not Stupid". Sabine Hossenfelder science education video series (YouTube). Image used in science ed. video with Wikipedia credit

A lot of the illusion examples are duplicated under different names. Someone should go through and remove some of them. — Preceding unsigned comment added by IanUK (talk • contribs) 14:12, 25 August 2006 (UTC)Reply

This article was the subject of a Wiki Education Foundation-supported course assignment, between 9 January 2023 and 10 April 2023. Further details are available on the course page. Student editor(s): SaifT10 (article contribs).

— Assignment last updated by SaifT10 (talk) 22:57, 24 January 2023 (UTC)Reply

Using Paint, to copy the first image, then pasting the gray connecting bar on top, there are three shades of gray. A is darker than bar which is darker than B. Illusion stands, but technically the caption is technically not true. 49.190.186.101 (talk) 12:50, 11 February 2023 (UTC)Reply

Hello, I am a university student studying optics and visual psychology, and I have a qualm regarding citation '2' in the leading sentence. The citation posits that "visual illusion" is the contemporarily preferred term over "optical illusion"; this is easily perceived to denote a synonymous relationship between the two. However, such is a falsehood—optical illusion denotes physical light interacting with matter to form a specious image (e.g., rainbows), while visual illusion denotes perception incongruent with reality resulting from erroneous brain activity (i.e., the phenomenon this page currently details).

I am creating this discussion topic to inquire whether there is any interest in changing the title of this page to a rightful state in "Visual illusion." 'Optical' & 'visual' are not technical synonyms, and I believe Wikipedia is falsely leading readers by conflation (though not maliciously, of course).

On the other hand, "optical illusion" warrants its own, substantive page. The physics behind optical phenomena are fascinating and can be scientifically documented. Zyploc (talk) 22:48, 22 October 2023 (UTC)Reply