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The different degrees of damage to the eyes of the laser pointer?

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At present, the laser pointers on the market mainly include red, green, blue, blue-violet and other related types. Human eyes have different absorption capabilities for different colors, that is, different wavelengths of laser light, so the thermal effects produced are also different. For example, blue light is most easily absorbed by the macular area of the eye, and it only takes a few seconds to damage the eye. If you sort the different types of laser pointers from low to high damage, they are red, green, blue, and blue-violet laser pointers in order.

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The high power laser pointer whose wavelength is in the range of far-infrared light, damages the eyes mainly to the cornea. Because almost all laser light of this wavelength is absorbed by the cornea, the cornea is the most damaged. Patients often feel that the eyes have foreign body-like irritation, photophobia, tearing, and decreased vision. At this time, you should protect the injured eyes, prevent the occurrence of infection, and treat them symptomatically. Lasers with an output power of less than 1 milliwatt generally do not cause damage, and those with an output power of more than 3 milliwatts can cause varying degrees of damage to the eyes.

2021-10-18 08:10:34

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