Certified Safety Professional Practice Exam

When a person is exposed to a Class 2 laser, the key characteristic is that the blink reflex is typically sufficient to prevent injury. Class 2 lasers emit visible light and are considered low risk because the human eye's natural response to bright light is to blink, which helps to minimize exposure time and reduce the likelihood of damage. This reflexive action provides a level of protection, making it more likely that brief exposure will not result in serious harm.

While it is important to recognize that even Class 2 lasers can cause damage to the eye under certain conditions, such as prolonged exposure or viewing directly into the beam, the general assumption is that the rapid blink response will usually protect against injury from typical exposure scenarios. Thus, the understanding of the safety characteristics of Class 2 lasers supports the idea that only in specific circumstances might reddening or potential injury occur, underscoring the importance of caution even when the odds of serious injury are low.