An antimicrobial preservative for use in an ophthalmic product that is well tolerated by the human eye, the preservative comprising 0.04% by weight of sodium chlorite, 0.02% by weight, 0.03% by weight, 0.04% by weight, or 0.05% by weight of hydrogen peroxide, and 0.2% by weight of boric acid, where the preservative does not generate chlorine dioxide, and where the preservative is at a pH of 7.4.Un conservante antimicrobiano para uso en un producto oftálmico que es bien tolerado por el ojo humano, comprendiendo el conservante 0.04% en peso de clorito de sodio, 0.02% en peso, 0.03% en peso, 0.04% en peso, o 0.05% en peso de peróxido de hidrógeno, y 0.2% en peso de ácido bórico, en donde el conservante no genera dióxido de cloro, y en donde el conservante está a un pH de 7.4.