Visual fallacies refer to errors in perception or judgement that arise when one relies too heavily on visual cues. Synonyms for this term include optical illusions, misleading appearances, deceptive images, and visual trickery. These phenomena can occur in a variety of contexts, from advertising and marketing to scientific research and everyday life. Examples of visual fallacies include the Müller-Lyer illusion, in which one line appears longer than another due to the orientation of the arrows at the ends, and the Ponzo illusion, in which two lines of equal length appear different due to the context in which they are presented. By understanding the many ways in which our eyes can deceive us, we can learn to be more critical and discerning consumers of visual information.