How often are GP lenses replaced?

How often are GP lenses replaced?

• A. Weekly
• B. Annually
• C. Monthly
• D. Bi-annually

Answer: (B)

Rigid gas permeable lenses are durable, but they still wear and accumulate deposits and micro-scratches over time. Replacing them annually keeps the lens surface smooth for clear, comfortable vision and helps maintain ocular health by reducing the buildup of deposits and edge wear that can irritate the eye or harbor microbes. Shorter intervals like weekly or monthly are more typical for soft lenses, while bi-annually is less common because the lenses can become less hygienic and less reliable in fit and optics as they age. An annual replacement is a practical balance between ensuring consistent performance and maintaining safety.

Rigid gas permeable lenses are durable, but they still wear and accumulate deposits and micro-scratches over time. Replacing them annually keeps the lens surface smooth for clear, comfortable vision and helps maintain ocular health by reducing the buildup of deposits and edge wear that can irritate the eye or harbor microbes. Shorter intervals like weekly or monthly are more typical for soft lenses, while bi-annually is less common because the lenses can become less hygienic and less reliable in fit and optics as they age. An annual replacement is a practical balance between ensuring consistent performance and maintaining safety.