Eye-worm
eye-worm noun /ˈaɪˌwɜːm/plural: eye-worms
A fragment of image, scene, or visual impression that becomes fixed in the imagination, recurring involuntarily or haunting within the mind’s eye. Word of my own creation, formed by analogy with earworm (from German Ohrwurm, literally “ear worm”), denoting a tune that lodges in the mind.