The term 'objective' polyopia was introduced in or shortly before 1928 by the German-American biological psychologist and philosopher Heinrich Klüver (1897-1979) to denote the perception of multiple identical images in regular visual perception (i.e. what is usually referred to as *polyopia). Klüver uses the term 'objective' polyopia in opposition to the terms * hallucinatory polyopia and *imaginal polyopia.
References
Klüver, H. (1966). Mescal and Mechanisms of hallucinations. Chicago, IL: University of Chicago Press.
Dictionary of Hallucinations. J.D. Blom. 2010.