Definitions

1. adjective

Describing a type of optical illusion that occurs when the two images formed by a prism or lens are not superimposed, resulting in a distorted or split image.

“The aniseikonic effect was a major concern in the design of the new glasses.”

2. noun

A type of optical illusion or a condition in which the two images formed by a prism or lens are not superimposed.

“The aniseikonic was a common problem in old movies.”