For example, the brightness of green light and red light of the same output are different. In this example, the green laser will be brighter. For some Laser Pointer, they may recommend the laser pointer with the best power and the most expensive price. It may surprise the audience at first, but every time the laser is turned on, the bright laser will interfere with night vision and adjust your eyes. You have been told not to point the laser pointer at other people, so as not to hurt your eyes. This rule also applies to furry friends. The laser beam is very concentrated and may damage your pet's eyesight and get lost. Dogs can move quickly while playing, which increases the risk of accidentally shining laser beams into their eyes.
The four main hazard levels (I to IV) of lasers include two sub-categories (IIIa and IIIb)-from those that do not cause known hazards to those that can cause major hazards if used improperly, up to possible causes . The higher the level, the more powerful the laser. Some laser pointers emit radiation in the form of light. Others emit radiation that is invisible to the naked eye, such as ultraviolet and infrared. Generally speaking, laser radiation itself is harmless and behaves very much like ordinary light in its interaction with the body. Laser radiation should not be confused with radiation from radioactive materials such as radio waves, microwaves, ionizing X-rays or radium.