Abstract: The present invention provides a contact lens cleaning solution which is capable of, simultaneously and in a simplified manner, rendering surfaces of the contact lens hydrophilic and cleaning the contact lens for removal of protein deposits, without suffering from reduction of the cleaning effect of a protease, and also provides a method of cleaning a contact lens which is capable of rendering the surfaces of the contact lens hydrophilic while, at the same time, cleaning the contact lens for removal of the protein deposits, by using the contact lens cleaning solution as described above.A desired contact lens cleaning solution is prepared, which contains a protease in an amount effective for removing protein adhering or clinging to the contact lens and gum arabic as a hydrophilicity rendering component, wherein divalent metal ions in the gum arabic are removed or inactivated.

Abstract: A liquid agent for a contact lens containing, as a preservative or sterilizing component, a carboxylated amine represented by the following formula, ##STR1## wherein R.sub.1 represents an alkyl group having 6-18 carbon atoms, R.sub.2 represents an alkylene group having 1-18 carbon atoms, A represents Na, K or H, and X represents H or --R.sub.3 COOZ group, wherein R.sub.3 represents an alkylene group having 1-18 carbon atoms and Z represents Na, K or H.

Abstract: A cleaning solution for cleaning a contact lens, which includes at least one first component each consisting of a tertiary amine oxide which is represented by the formula given in the specification and at least one second component each consisting of an anionic surface active agent in the form of a triethanolamine salt, a total content of the at least one first component and the at least one second component being within a range of 0.1-20% by weight, a ratio of a total content of the at least one first component to a total content of the at least one second component being within a range from 1/4 to 30/1.

Abstract: A method of simultaneously cleaning and disinfecting a contact lens is disclosed, which method comprises the steps of: (a) preparing a cleaning solution for the contact lens comprising an effective amount of a proteolytic enzyme, 15-60 w/v % (percent by weight/volume) of propylene glycol, 10-60 w/v % of glycerine, and water, a total content of the propylene glycol and glycerine being in a range of 30-80 w/v %; (b) diluting the cleaning solution with a disinfecting or storing liquid for the contact lens which contains an ionic antimicrobial agent, so as to provide a dilution; and (c) immersing the contact lens in the dilution.

Abstract: An ocular lens material comprising a copolymer obtained by copolymerizing a copolymerizable composition of which the main components are a diene polymer and a monomer capable of copolymerizing with the diene polymer, having high oxygen permeability, high refractive index and high mechanical strength, and being excellent in flexibility and shape recoverability, and its production process are disclosed.

Abstract: It is an object of the present invention to provide a cleaning and disinfecting solution for a contact lens to be cleaned and disinfected simultaneously in a simplified manner with high efficiency. It is also an object of the present invention to provide a method of cleaning and disinfecting the contact lens wherein the cleaning and disinfection of the contact lens can be effected simultaneously in a short period of time by using the above-indicated cleaning and disinfecting solution. The above objects may be obtained according to one aspect of the present invention which provided a cleaning and disinfecting solution for a contact lens comprising an effective amount of proteolytic enzyme, 60-80% w/v % of propylene glycol, 10-35% w/v % of glycerine, and water, a total content of propylene glycol and glycerine being in the range of 70% to 95 w/v %.

Abstract: An ocular lens material containing a polymer having a maleimide derivative-.alpha.-methylstyrene unit and N,N-dimethylacrylamide unit, which is excellent in optical property, has a high water-absorptive property and a high mechanical strength and further only shows an extremely small size change based on pH change of a solution under the hydrated state, and which can be preferably used for, in particular, water-absorptive contact lenses and the like, and a process for producing the same.

Abstract: A cleaning and disinfecting method for a contact lens comprising immersing a contact lens in a treating solution containing a hypohalogenous acid and applying a direct current to the treating solution with repeatedly reversing a positive electrode and a negative electrode plural times, or comprising immersing a contact lens in a solution for treatment containing a halide and applying a direct current to the solution for treatment with repeatedly reversing a positive electrode and a negative electrode plural times. According to the cleaning and disinfecting methods, a contact lens can be cleaned up and disinfected by excellent disinfecting ability and cleaning ability of the hypohalogenous acid, and after that, the hypohalogenous acid can be immediately reduced and detoxicated.