What is the role of the periodic cleaner in GP lens care?

• A. Remove deposits on a scheduled basis
• B. Disinfect lenses continuously
• C. Lubricate lens surface
• D. Replace lens

Answer: (A)

Periodic cleaner is used to remove deposits that build up on gas-permeable lenses over time. It’s applied on a planned schedule—often weekly or monthly—because some deposits (like mineral buildup or protein films) are tougher to remove and don’t come off with the daily cleaning step alone. By using a stronger cleaner at intervals, you lift and dissolve those stubborn deposits, helping the lens surface stay smooth for comfortable wear and good vision. This step is not for disinfection, which is handled by a separate disinfection process; it’s also not for lubrication (rewetting drops do that) and it doesn’t replace the need to replace or re-evaluate lenses over time.