In some cases, lasers or other bright lights (spotlights, searchlights) aimed at aircraft can be dangerous. It is most likely that during critical phases of flight, such as landing or takeoff, the bright visible laser will cause distraction or brief flashes of blindness. While that possibility still exists, it's much less likely that a visible or invisible beam could cause permanent damage to a pilot's eye. Although laser weapons were developed by the armed forces, they are so specialised, expensive and controlled that it is impossible for non-military lasers to cause structural damage to aircraft. Pointing lasers at aircraft can harm pilots and lead to arrest, trial and imprisonment. It could also lead to requests to allow or ban high power laser pointer In some jurisdictions, such as The Australian state of New South Wales, laser Pointers have been restricted due to multiple incidents.
On Feb. 17, 2019, Shorey pointed his Green laser pointer at helicopters flying over West Route 90, according to a press release. The helicopter is assisting in the search for a shooting suspect. The laser temporarily blinded the pilot and he couldn't read the gauges. According to experts, China's current GB7247 standard laser harm to the human body is divided into four grades, one of the standard laser output power is less than 0.4 milliwatts; The output power of the two-stage standard laser is between 0.4 milliwatt and 1 milliwatt. The output power of the three-stage standard laser ranges from 1 milliwatt to 500 milliwatt. A level 4 laser with output power greater than 500 mw may cause a fire. When the laser pointer hits a sensitive part of the retina of the human eye, it can cause eye damage. In addition, after seeing the dazzling beam for a long time, it can also affect the optic nerve and central nervous system, making people feel dizzy and even nauseous.