Never give laser pointers to children!
In order to be able to handle lasers safely, they are divided into several categories according to their degree of danger. There, measures to prevent laser radiation, the higher the laser level, the wider the range. Laser pointerUp to 2 M levels can be assigned. This means that the output power of the "legal" laser pointer 1 must not exceed milliwatts. Random measurement, the maximum allowable output power of the laser pointer is often exceeded. Laser pointers with a power exceeding 5 mW are often found. If you use or even broadcast such a laser, serious eye damage cannot be ruled out. Unfortunately, the output power can only exceed the detection and measurement equipment. Therefore, the following principles apply: The Laser pointer is not a toy, nor is it in the hands of a child.
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When we look directly at the light source of the laser pointer with our eyes, the laser spot will fall on the center of the macula of the retina after converging through the refractive system of the eye. The laser energy is quickly absorbed by the pigment components in the center of the macula, and a thermal effect is generated, leading to local photoreceptor cells. Solidification, denaturation, necrosis and loss of photosensitivity. From the photoreceptor cell burns, to the full-thickness macular hole. The severity of damage depends on the type of laser, wavelength, exposure time, and spot size. The damage of laser to the macula is irreversible. Once damaged, it will cause permanent vision loss. This is why our ophthalmologists must be careful to avoid the center of the macula when performing fundus laser treatment for patients.
2021-09-27 12:16:19
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