Which statement about replacement schedules is true?

Which statement about replacement schedules is true?

• A. Disposable, Planned
• B. Daily, Weekly
• C. Two types: replacement schedules vary by brand
• D. There are three types: disposable, planned, and mixed

Answer: (A)

Replacement schedules describe how often contact lenses should be replaced to keep eyes healthy and comfortable. The standard framework uses two main types: disposable lenses, worn for a single day and then discarded, and planned replacement lenses, which are replaced at regular intervals (such as every two weeks or every month). This two-type view is the most accurate and widely used in practice, which is why describing the options as disposable and planned is the best answer. Saying replacement schedules are simply daily and weekly is incomplete because it fixes only two intervals and ignores the broader range of planned replacement intervals and the existence of daily disposables. The idea of a third category like mixed isn’t a recognized, consistent classification in replacement scheduling.

Replacement schedules describe how often contact lenses should be replaced to keep eyes healthy and comfortable. The standard framework uses two main types: disposable lenses, worn for a single day and then discarded, and planned replacement lenses, which are replaced at regular intervals (such as every two weeks or every month). This two-type view is the most accurate and widely used in practice, which is why describing the options as disposable and planned is the best answer. Saying replacement schedules are simply daily and weekly is incomplete because it fixes only two intervals and ignores the broader range of planned replacement intervals and the existence of daily disposables. The idea of a third category like mixed isn’t a recognized, consistent classification in replacement scheduling.