What is the correct procedure for cleaning contact lenses according to recommended guidelines?

Using a multi-purpose solution is the recommended procedure for cleaning contact lenses because these solutions are specifically formulated to both clean and disinfect lenses by effectively removing debris, proteins, and microorganisms. Multi-purpose solutions are versatile; they can be used for rinsing, cleaning, disinfecting, and storing contact lenses, making them a convenient choice for lens care.

Water alone is not suitable for cleaning contact lenses as it does not possess the disinfecting properties required to eliminate harmful pathogens that could lead to eye infections. Similarly, relying solely on a preservative-free saline solution does not provide sufficient cleaning or disinfecting capabilities, as these solutions are typically intended for rinsing rather than comprehensive cleaning. Lastly, not cleaning lenses at all can lead to a buildup of harmful deposits, increasing the risk of eye complications and infections. Therefore, using a multi-purpose solution aligns with best practices for contact lens hygiene and care.