Laser damage to the eyes

by:LASERRPAIR     2020-06-05
????Laser wavelength and eye damage: Among the laser damage, the most serious eye damage is in the body. Lasers with wavelengths in visible light and near-infrared light have a low absorption rate and high transmittance of the refractive medium of the eye, and the focusing ability (ie, light-gathering power) of the refractive medium is strong. When high-intensity visible or near-infrared light enters the eye, it can pass through the refractive medium of the human eye and accumulate light on the retina. At this time, the laser energy density and power density on the retina are increased to thousands or even tens of thousands of times. And lose the role of light. The coagulation and denaturation of proteins caused by overheating when the laser converges on the photoreceptor cells is irreversible damage. Once damaged, it can cause permanent blindness of the eyes. Different laser wavelengths have different effects on the eyeball, and the consequences are also different. The damage of the far-infrared laser to the eyes is mainly cornea, because lasers of this wavelength are almost completely absorbed by the cornea, so the corneal damage is the most serious, mainly causing keratitis and conjunctivitis, feeling eye pain, foreign body-like irritation, and fear of light , Tears, hyperemia of the eyeballs, decreased vision, etc. In case of far-infrared light damage, the injured eye should be covered and protected to prevent infection and symptomatic treatment. Ultraviolet laser damage to the eye is mainly the cornea and the lens. Almost all the ultraviolet laser in this band is absorbed by the lens of the eye, while COSCO mainly absorbs the cornea, which can cause the lens and cornea to be cloudy.
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