What is the disadvantage of a chemical-based rigid contact lens care system?

A chemical-based rigid contact lens care system can indeed have challenges concerning disinfection. While these systems are designed to cleanse and disinfect lenses, there can be variations in their effectiveness. Factors such as improper use, insufficient soaking times, or inadequate concentration of the disinfecting solution can lead to poor disinfection. As a result, this may leave behind harmful microorganisms on the lenses, increasing the risk of eye infections.

In contrast, other potential issues such as irritation may occur, but they are not inherent disadvantages of the chemical system itself, as irritation can arise from many factors unrelated to the care system. Similarly, simplicity of use is often a positive attribute of these systems, allowing users to handle their lenses with relative ease. A low replacement rate is not typically a concern either, as the care system's effectiveness does not inherently influence how often lenses are replaced, which is generally determined by the type of lenses themselves and a user's specific eye health needs.