When would a patient be more likely to use an oxidative system with GP lenses?

• A. Those with preservative sensitivities
• B. Those with dry eye
• C. New wearers
• D. People with color vision deficiency

Answer: (A)

Hydrogen peroxide–based disinfection is an oxidative, preservative-free system. It’s especially good for patients who are sensitive or allergic to eye lens preservatives because there are no preserved chemicals left on the lens after disinfection. For gas-permeable lenses, using a peroxide system minimizes preservative exposure on the lens surface, reducing irritation and intolerance. Just remember the neutralization step is essential before wearing the lenses, so the oxidizing agent is fully neutralized. The other factors listed don’t specifically drive the choice of disinfection method: dry-eye is multifactorial, new wearers often start with multipurpose solutions for convenience, and color vision deficiency doesn’t affect lens care.