What is the recommended practice regarding replacement of disinfection solution and the lens case?

• A. Replace solution daily and case regularly.
• B. Replace solution yearly and case never.
• C. Replace both only when damaged.
• D. Replace only the solution, not the case.

Answer: (A)

The main idea here is reducing eye infection risk by keeping both the stored solution and the lens storage container clean and fresh. Disinfection solution can become contaminated with bacteria and other microbes during use, so using a fresh solution every time you store lenses helps keep them sterile. The lens case, after repeated use, can accumulate deposits and biofilms that are hard to remove, creating a reservoir for microbes; replacing the case regularly helps prevent those contaminants from contacting your lenses.

So, using a fresh disinfection solution daily and replacing the lens case at regular intervals (as recommended by the manufacturer or your clinician) provides the safest practice for lens storage. The other options either neglect the importance of the case or rely on infrequent replacement, which increases the risk of infection.