What is the importance of Loretta's glass eye in the story, Woman Uses Glass Eye to Spy on Philandering Husband, from the collection, Tabloid Dreams?

Loretta discovers that her glass eye, when out of the socket, still allowed her to see and even hear events from its own perspective, Loretta gives the reader a "double vision" account of what she thought, saw, and heard in her own body as well as the events observed by the glass eye when it was out of her eye socket. In shock and in pain, Loretta is virtually beside herself as she sees sign after sign of betrayal and loss. Yet in the grip of emotional trauma, she is powerless to say or do anything to change the shift of her husband's affections to the other woman.