When can employees wear shaded or colored lenses?

The correct choice indicates that employees may wear shaded or colored lenses only with a doctor's authorization. This policy ensures that the use of such lenses is based on medical necessity rather than personal preference. In many workplaces, safety and health protocols are in place to protect employees' vision, and medical guidance is critical in determining whether such eyewear is appropriate for an individual's specific needs, especially in environments where visibility and color recognition are essential for safety and performance.

In contrast, wearing shaded or colored lenses during work shifts, at night, or throughout the day without proper authorization could impair an employee's ability to perform their duties effectively or safely, particularly in roles where clear vision is imperative. Therefore, this option emphasizes the importance of adhering to medical assessments to protect both the employee and the workplace environment.