Luminous ink contact lenses

Normal contact lenses are designed for people who have vision shortage, but luminous ink contact lenses are specially for seeing invisible ink backside marked decks.
What is the difference between luminous ink contact lenses and regular contact lenses?
From the out looking, luminous ink contact lenses have no difference with regular contact lenses. However, we processed these luminous ink contact lenses according to white-light principle so that you can see through invisible ink marked cards. Marked cards invisible ink and luminous ink contact lenses are good poker deceit devices in all kinds of poker games.