“Palin” is ancient Greek for “repeat,” and “opsia” is the ancient Greek for “see.” Palinopsia is when you see an image repeatedly even when the image’s stimulus has gone away. Palinopsia is unique to ...

Derived from the Greek word “palin” for “again” and “opsia” for “seeing,” palinopsia is a rare visual system processing distortion. People with this distortion continue to see the image of an object ...