reduced the process of this invention may further be accelerated by heating the liquid in the container preferably to a temperature of not more than 60 u00b0 c and preferably to a temperature of about 35 u00b0 c a temperature of this order accelerates the dissolution of the materials as well as the cleaning and sterilizing process but is still considerably below the temperature at which even heat sensitive contact lenses are likely to be damaged according to another embodiment of the method of this invention a tablet containing additives that change the color of the liquid upon completion of the sterilizing and cleaning process can be employed so that the user knows immediately when the cleaning process is completed and the neutralizing process has started also in accordance with this invention a treatment liquid that is the salt solution or distilled water can be introduced into the container under pressure such as from pressurized dispenser such as a spray bottle or aerosol can which is a convenient way for the solutions to be stored and handled while traveling the apparatus in accordance with this invention includes a housing in which there is arranqed a motor a drive unit a stirrer a contact lens holder a compartment for the liquid bath and a power supply unit the apparatus is easy and convenient to use as well as relatively fast safe and reliable the apparatus does not require an.