New original tin contact lens circle contact lens Product details Power Range Plano ~6.00(0.25 step) ; 6.00~10.00(0.50step) Base Curve 8.6 mm Diameter 14 mm Water content 40% Center Thickness 0.08 mm Package Blister ,Vial Contact lenses are thin, clear plastic disks you wear in your eye to improve your vision. Contacts float on the tear film that covers your cornea.