Why does the thermal effect of the laser pointer hurt people?
The thermal effect of the Laser pointer will increase the temperature of the macular tissue, which is the most sensitive to vision, and cause protein degeneration, coagulation, scarring, and even cracks in the macular tissue, resulting in permanent damage to vision. Our eyes can see objects because of the retina, and the macular area in the center of the retina is the first to "contact" light. It is the most sensitive and vulnerable area in the eye. The light emitted by the laser pointer is basically straight, with a long emission distance and high intensity. When it hits the human eye, the first thing that hurts is the macular area. Although the eyes will instinctively close their eyes when they encounter strong light or light from a laser pointer, but this two-second exposure time is enough to cause fatal damage to the macular area, and it is almost impossible to recover.
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Our eyes can see objects because of the retina, and the macular area in the center of the retina is the first to "contact" light. It is the most sensitive and vulnerable area in the eye. The light emitted by the laser pointer is basically straight, with a long emission distance and high intensity. When it hits the human eye, the first thing that hurts is the macular area. Although the eyes will instinctively close their eyes when they encounter strong light or light from a laser pointer, but this two-second exposure time is enough to cause fatal damage to the macular area, and it is almost impossible to recover. In terms of the degree of damage of the laser pointer, it should be based on the laser pointer's laser power output, the location, angle, distance and other factors of the laser pointer, as well as the duration of continuous irradiation. According to common sense, the damage caused by the laser pointer to the eyes should be the greatest. The distance is not too far when irradiated, the laser power is large, the angle is not too deviated, and the longer time may cause extreme damage to vision, and even the possibility of blindness.
2021-10-07 12:23:01
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