Optimum by Lobob Extra Strength RGP Cleaner Contact lenses Solution is a sterile non-preserved cleaning solution.Eliminates surface deposits oils lipids salts and cosmetic residue without the use of parameter changing abrasives.Contains NO polymeric solvents. It is a sterile non-preserved cleaning solution.. eliminates surface deposits oils lipids salts and cosmetic residue.. for use with fluorosilicone acrylate and silicone acrylate rigid gas permeable RGP. Contains NO polymeric solvents and rinses easily from the lens surfaces.