AVIZOR GP Cleaner is a solution for all types of rigid and gas permeable contact lenses. Do not use this solution with soft contact lenses. AVIZOR GP Cleaner solution cleans and disinfects. To ensure adequate disinfection, lenses should be soaked in the solution for at least 4 hours. AVIZOR GP Cleaner solution should never come in contact with the eyes. If the lenses are not sufficiently free of the residual solution, it can cause irritation. That's why it is recommended to rinse lenses with a saline solution before applying.