Infrared contact lenses for grey eyes can be used to read luminous markings on the back of marked playing cards. These grey eyes contact lenses are one of the advanced and excellent cheating devices in the poker market. These IR contact lenses are suitable for someone whose eyes’ color is grey. If they want to know the number and suit of poker cards when the poker cards face down, they can wear our luminous ink contact lenses to see the invisible markings on invisible ink marked cards. There are 4 mm, 7mm and 9mm contact lenses. Moreover, there are different colors of infrared contact lenses for selection. If you have any requirement about unique IR contact lenses, do not hesitate to contact us.