过氧化氢
Both hydrogen peroxide and multipurpose solutions remove debris and build-up. Significant differences exist between the two. Hydrogen peroxide has the ability to penetrate microbial films, which helps create a deeper clean. Hydrogen peroxide solutions do not contain preservatives. This can be beneficial for people who are allergic or sensitive to the preservatives in multipurpose solutions. Hydrogen peroxide solutions have a greater ability to fight acanthamoeba keratitis, an infection that can cause blindness. Some researchers have found the peroxide cleaning regimen to encourage better contact lens care practices among peroxide users compared to multipurpose solution users.