Palynopsia

Palinopsia (palinopsia; from the Greek words palin - "again" and opsis - "vision"; also called visual perseveration) is a visual disorder in which visual images previously perceived are retained in consciousness and continue to be seen for some time after that. , as the stimulus has already disappeared.

People with palinopsia see "afterimages" of objects in their field of vision for several seconds or minutes after the objects themselves have disappeared. This can cause current visual images to overlap with "ghost" images that the brain is still holding.

Palinopsia usually occurs after brain damage (eg, stroke, trauma, tumor, encephalitis) or with certain neurological disorders such as epilepsy, migraines, or Parkinson's disease. It can also be a side effect of certain medications or drugs. Treatment depends on the cause, but usually includes medications and therapy.