Under what conditions are hand-held lasers permitted for use?

Hand-held lasers are permitted for use when appropriate safety measures and training are in place because it ensures that the operator is capable of handling the laser safely and understands the potential risks involved. Training involves familiarizing the operator with the specific laser type, its hazards, necessary protective equipment, proper use procedures, and emergency protocols. Implementing safety measures, such as wearing appropriate eye protection and establishing warning signs, mitigates risks associated with laser exposure and ensures that others in the vicinity are aware of potential hazards.

This approach prioritizes safety for both the operator and anyone near the laser use, creating a controlled environment where the device can be used effectively and responsibly. Other options do not promote safe practices as using lasers without training or safety measures can lead to serious accidents or injuries.