- The term gyropsia comes from the Greek words guros (round, circle), and opsis (seeing). It was employed, and possibly introduced, by the French psychiatrist Henri Ey (1900-1977) in 1973 to denote a * metamorphopsia consisting of an illusory circular movement.ReferencesEy, H. (1973). Traité des hallucinations. Tome 1. Paris: Masson et Cie., Éditeurs.
Dictionary of Hallucinations. J.D. Blom. 2010.
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metamorphopsia — The term metamorphopsia comes from the Greek words metamorphoun (to change the form) and opsis (seeing). It translates roughly as seeing an altered form . It is not clear who introduced the term, but it appears in a medical lexicon as early as … Dictionary of Hallucinations