Anti-theft card contact lenses made from invisible ink silicone hydrogel or hydrated polymers are light and durable invisible ink glasses poker. Standard contact lenses include both hard and soft lenses. GS contact ink lenses are now soft lenses because of their comfort when reading marked cheat sheets. Additionally invisible ink glasses, contact ink cards lenses adhere strictly to contact lens process rules, which means that 13.5mm-14.5mm is a common range for contact lens diameters. Practical applications will be affected by the larger diameter. Central thickness also affects comfort and wea…