Certified Paraoptometric (CPO) Practice Exam 2025

What is the primary approval for extended wear contact lenses?

1. Approved for wearing eight hours

2. Approved for wearing twenty-four hours, including sleeping

3. Approved for daily use only

4. Approved for wearing two days continuously

The correct answer is: Approved for wearing twenty-four hours, including sleeping

The primary approval for extended wear contact lenses is indeed that they are approved for wearing twenty-four hours, including while sleeping. This designation means that these lenses are designed to be worn continuously for up to a week or longer, depending on the specific product and the individual's eye care requirements. These lenses allow for extended periods of wear without the need to remove them for sleeping, which provides convenience for users who prefer not to go through the daily routine of insertion and removal. Other options represent incorrect timelines for contact lens wear. Some options imply limited wear times or daily use only, which does not reflect the intended use of extended wear lenses.