Which action should be avoided regarding GP solutions to maintain safety?

• A. Cap solutions
• B. Read solution labels
• C. Keep lens hydrated in case
• D. Never use tap water

Answer: (D)

Exposure to water, especially tap water, with gas-permeable lenses can introduce dangerous microbes to the eye. Tap water is not sterile and can harbor bacteria and free-living amoebae that can cling to a lens or its case. If such contaminants reach the cornea, they can cause serious infections like keratitis, which can threaten vision. Because of this, never use tap water to rinse, rinse-to-store, or soak GP lenses. Rinse and store only with the recommended sterile solution or saline, and keep the lens case clean and capped when not in use. Reading product labels helps ensure you’re using solutions that are compatible with the lens material and the disinfection process. Keeping lenses hydrated should be done with the approved solution, not with tap water, to minimize contamination risk.