Which option correctly lists the four FDA defined wearing schedules for contact lenses?

Which option correctly lists the four FDA defined wearing schedules for contact lenses?

• A. Daily wear, continuous wear, flexible wear, frequent wear
• B. Extended wear, overnight wear, continuous wear, flexible wear
• C. Daily wear, extended wear, continuous wear, flexible wear
• D. Daily wear, extended wear, continuous wear, overnight wear

Answer: (C)

The key idea is that the FDA defines how long a contact lens can be worn before it must be removed, giving four distinct wearing schedules. The correct set matches these official categories: daily wear, extended wear, continuous wear, and flexible wear. Daily wear means the lens is worn only during waking hours and is removed before sleep to protect the eye from reduced oxygen when the eye is closed. Extended wear covers lenses that can be worn for longer stretches, including overnight, as approved on the lens labeling; the maximum duration depends on the specific lens. Continuous wear refers to lenses approved for uninterrupted wear for the full allowed period, without removal, though the exact time frame varies by product. Flexible wear is a hybrid schedule that allows a clinician to authorize either daily wear or extended wear within the permitted maximum, accommodating different patient needs while staying within safety guidelines. Other phrasings like “overnight wear” or “frequent wear” aren’t separate FDA-defined schedules; they’re covered by the schedules above depending on the lens approval and labeling.

The key idea is that the FDA defines how long a contact lens can be worn before it must be removed, giving four distinct wearing schedules. The correct set matches these official categories: daily wear, extended wear, continuous wear, and flexible wear.

Daily wear means the lens is worn only during waking hours and is removed before sleep to protect the eye from reduced oxygen when the eye is closed. Extended wear covers lenses that can be worn for longer stretches, including overnight, as approved on the lens labeling; the maximum duration depends on the specific lens. Continuous wear refers to lenses approved for uninterrupted wear for the full allowed period, without removal, though the exact time frame varies by product. Flexible wear is a hybrid schedule that allows a clinician to authorize either daily wear or extended wear within the permitted maximum, accommodating different patient needs while staying within safety guidelines.

Other phrasings like “overnight wear” or “frequent wear” aren’t separate FDA-defined schedules; they’re covered by the schedules above depending on the lens approval and labeling.