We process the luminous ink contact lenses for making cards with special material in the center of the lenses. After being processed, it is looks as same as the original one and can be used to see invisible contact lens playing cards. In the white light environment, it will perform best and you can see the invisible ink markings on the marked decks very clearly. In this way, you can know what playing cards any player has and predict how to win this game. It would not change the eyes color much and it is difficult for others to notice any difference.
There are advantages of this luminous ink contact lenses, it is more safe than perspective glasses that can see through poker cards and it can use for all kinds of poker card games.