For those who are sensitive to preservatives a hydrogen peroxide system may help (ie.Clear Care). An acidic solution, hydrogen peroxide, is used for cleaning, disinfecting, rinsing and storing your contact lenses. With this product, you place your lenses in the provided basket and rinse them, then fill the cup with solution up to the indicated line and then place the basket in the cup and screw till closed to clean and disinfect your lenses.
You must use the case provided by the cleaning system because it has a built-in neutralizer (to convert the hydrogen peroxide to water, so it doesn’t sting your eyes). Ensure the lenses are kept in the case for a minimum of 6hrs to allow of complete neutralization of the acid. Do not remove the lenses before this otherwise you will be inserting acidic lenses into your eyes.
After the lenses cleaned and neutralized, remove the lenses and rinse them with a separate multi-purpose solution before placing them in your eyes.