One-pack preparation for disinfection, neutralization and cleaning of contact lenses and method of disinfection, neutralization and cleaning

A one-solution type of combined formulation for disinfecting, neutralizing and cleaning a soft contact lens, which comprises:

• (A) a first formulation consisting essentially of an iodine-based disinfectant and a proteolytic enzyme, and
• (B) a second formulation consisting essentially of a reducer and a foaming agent and having a delayed release coating,
• at least one of the first and the second formulations contains a nonionic surfactant,
• wherein the iodine-based disinfectant of the first formulation is a member selected from the group consisting of povidone iodine and polyvinyl alcohol iodine and the proteolytic enzyme is a member selected from the group consisting of enzymes derived from bacillus bacteria and enzymes derived from animal pancreases, and
• wherein the nonionic surfactant is selected from the group consisting of polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene-polyoxypropylene block polymer of ethylene di-amine, polyoxyethylene 20 sorbitan monooleate, polyethylene glycol monostearate and polyoxyethylene hydrogenated castor oil 60.