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search  Palinopsia (Greek: palin for "again" and opsia for
"seeing") is a visual disturbance defined as the persistent or
recurrence of a visual image after the stimulus has been
removed.[1] Palinopsia is not a diagnosis, but a broad term that
describes a heterogeneous group of pathological visual symptoms
with a wide variety of etiologies. Visual perseveration is
synonymous with palinopsia.  In 2014, Gersztenkorn and Lee
comprehensively reviewed all cases of palinopsia in the
literature and subdivided it into two clinically relevant
groups: illusory palinopsia and hallucinatory palinopsia.[2]
Hallucinatory palinopsia, usually due to seizures or posterior
cortical lesions, describes afterimages that are formed, long-
lasting, and high resolution. Illusory palinopsia, usually due
to migraines, head trauma, prescription drugs, or hallucinogen
persisting perception disorder (HPPD), describes afterimages
that are affected by ambient light and motion and ar