Abstract: In an apparatus for disinfecting contact lenses (19, 20), said contact lenses are immersed in a reaction vessel (1) with a 3% H.sub.2 O.sub.2 -solution (21). The contact lenses (19, 20) are placed in a lens holder (13, 14) on a frame (6) which also comprises a catalyst (9) in a compartment (7), to which the H.sub.2 O.sub.2 -solution has access. The catalyst (9) neutralizes the H.sub.2 O.sub.2 -solution, but said neutralization is delayed at first by the developed oxygen being collected and maintained in contact with the surface of an apertured system of spokes (10; 10a to 10h) of the catalyst (9) in such a manner that the disinfecting effect is improved.