Which practice helps maintain sterility when handling GP lens solutions?

• A. Cap solutions
• B. Read solution labels
• C. Avoid touching the tip of solutions
• D. Do not use old or expired solution

Answer: (C)

Preventing contamination during dispensing is the key to keeping GP lens solution sterile. When the tip of the bottle or dropper is touched, microbes from fingers or the surrounding environment can enter the bottle and then be delivered to the lens case or eye, compromising sterility. By avoiding contact with the dispensing tip, you minimize this transfer risk and keep the solution uncontaminated for safe use.

Keeping the bottle capped when not in use, reading labels to ensure correct product and proper expiration, and using fresh, non-expired solution are all important practices for overall safety. However, the most direct action that preserves sterility during handling is not touching the tip of the solution.