One of four La dimensión desconocida (1959) episodes to include an eye, not a spiral, at the introduction. The other three are Mr. Bevis (1960), A World of His Own (1960), and The Mighty Casey (1960).
This episode owes a lot to the story "Evening Primrose" by sometime TZ contributor John Collier. Collier's tale appeared as a teleplay several years later on ABC, starring Anthony Perkins.
Does not have the classic four-note theme at the beginning.
In 1951, John Collier published "Evening Primrose" a short story in the collection "Fancies and Goodnights", which in 1966 was adapted by ABC. There are great similarities in the plot that address the theme of people who are living mannequins in a parallel dimension in stores.