As with contact lenses, always keep your hands clean when removing contact lenses also. If contact lenses are worn and removed using other tools, they should also be clean and disinfected periodically. And if you keep using contact lens cases without disinfection, you’re exposed to harmful bacteria. This can cause secondary infections as a result of microscopic corneal wounds in the eye. Always keep the contact lens case clean and replace it with a new one if it is badly contaminated. Cleanliness for the health of the eyes is not enough to be emphasized 100 times. Make sure to use contact lenses in a clean environment.