Which class is noted to be hazardous to eyes, skin, and can cause fire if not handled properly?

Class IV lasers are indeed recognized as hazardous to the eyes, skin, and can pose a fire risk if not handled with appropriate care. This classification includes high-powered laser systems that emit significant amounts of energy, which can lead to thermal injuries to biological tissues, including the retina of the eye or skin if direct exposure occurs.

In a clinical setting, Class IV lasers require stringent safety measures such as protective eyewear for both the operator and the patient, as well as appropriate workspace safety protocols to mitigate fire hazards. The potential for igniting materials, especially in environments where flammable substances may be present, further underscores the importance of proper handling practices.

Other classes, such as Class I, Class II, Class IIIA, and Class IIIB, have lower power levels and therefore present reduced risks. For instance, Class I lasers are considered safe under all conditions of normal use. Class II lasers may cause eye injury if viewed directly for extended periods but are generally less dangerous. Similarly, Class IIIA lasers may produce a hazard under certain conditions but are still manageable with basic safety measures. Class IIIB lasers present more risk than IIIA but generally do not match the severity of hazards associated with Class IV lasers. Thus, the indication that Class IV lasers are hazardous