Certified Healthcare Safety Professional (CHSP) Practice Exam

How are lasers categorized in terms of safety?

1. Class 1, Class 2, Class 3, Class 4

2. Class A, Class B, Class C, Class D

3. Type I, Type II, Type III, Type IV

4. Level 1, Level 2, Level 3, Level 4

The correct answer is: Class 1, Class 2, Class 3, Class 4

Lasers are categorized in terms of safety using four primary classes: Class 1, Class 2, Class 3, and Class 4. This classification system is established by the American National Standards Institute (ANSI) and is crucial for ensuring safe use and handling of lasers in various environments, including healthcare. Class 1 lasers are considered safe under all conditions of normal use, meaning they do not pose a hazard even when viewed directly. Class 2 lasers are also safe for brief exposure since they emit visible light, which triggers a blink reflex to protect the eye. However, they can still pose a hazard if viewed for prolonged periods. Class 3 lasers are divided into Class 3A and Class 3B; while Class 3A is only hazardous for direct viewing under certain conditions, Class 3B can cause eye injury with direct exposure. Finally, Class 4 lasers are high-powered and can cause significant damage to the eyes and skin, as well as pose fire hazards, making strict safety measures essential when using them. This understanding allows healthcare professionals and safety personnel to implement appropriate safety protocols and protective measures based on the laser classification, ensuring both patient and staff safety in environments where lasers are used.