Afterimages are the visual phenomena where an image continues to appear even after the visual stimulus has been removed. There are several synonyms for afterimages such as retinal persistence, ghosting, and palinopsia. Retinal persistence is the visual effect that occurs when the retina continues to produce a sensation even after the stimulus is removed. Ghosting is the perception of a faint duplicated image after the original has gone. Palinopsia is the persisting or recurrence of an after-image that persists even after the original image is gone. Although these words describe a similar phenomenon, each has its nuance that can be used in various contexts.