Ophtecs Cleadew GP care solution is suitable for hard contact lenses (including rigid gas permeable and orthokeratology lenses). The active disinfecting ingredient is povidone iodine. The lens caring system merges lens disinfection and povidone iodine neutralization in just one step. The neutralizing pill can also remove protein deposits every time after the lens disinfection to prevent the formation of a biofilm that causes disastrous bacterial growth.