First coming into existence in the muggle world in 1790, Eye miniatures were a way for high status individuals to display the token of their lover, without revealing in full who they were. They quickly developed in the wixen world when famed wixen painter and portraitist, Annabel Nancy, developed a spell by which an individual could see through the eyes of such a miniature.
Only effective on the tiny pieces, the spell allowed a wix to truly watch their lover. These ”Jealous Eyes” as they soon came to known also allowed another interaction between lovers.
Sitting in front of a mirror, or even opposite the miniature, the lover with the miniature could masturbate, allowing their lover to observe. Such scandalous stories soon filled the Wixen gossip rags of the era, until eventually public opinion of the pieces ostensibly dropped so low the Ministry was forced to place restrictions on the usage of such paintings.
In the modern age, while the miniatures eyes will still move, many of the original subjects no longer live and no one can watch through them any more. However the spell is still in the public archives of many magical libraries and ministries, and some scattered few do still make such miniatures, now the restrictions have been lifted.
— Excerpt from a Guest Lecture on Lust and Lovers in Wixen Art History at the Salem Witches Institute