Views: 82 Author: Site Editor Publish Time: 08-22-2022 Origin: Site
In recent years, the laser industry has developed rapidly, and the application market has gradually expanded, breaking through many problems and unlocking a number of core technologies. With the vigorous development of the laser industry, more and more people have begun to pay attention to the research and development, production and application of laser source. Among them, "what effect will the laser have on the human body?" has became a question that everyone is very concerned about. In response to this question, LEAPION will answer it for you.
The effects of laser on human body mainly include damage to the eyes and damage to the skin.
Due to its physiological structure, human skin can form a complete protective layer, which will have a certain extent protection on the human body to in daily life. When the laser with excessive power is irradiated to the skin, it will cause damage to the skin tissue. Although this damage can be repaired by the skin tissue itself, but the protective function of the repaired skin tissue will be reduced.
The degree of laser damage to the skin is mainly affected by factors such as the amount of laser irradiation, the wavelength of the laser, the depth of the skin tone and tissue moisture and etc.. A large number of experiments have proved that when the laser irradiates the skin, the power density of the laser is positively correlated with the degree of skin tissue damage. There is a certain extent safety threshold for the absorption of laser energy by human skin. When the safety threshold is exceeded, the human skin (the part irradiated by the laser) will appear erythema, blisters, carbonization, boiling, burning and even vaporization due to the increase of the amount of laser irradiation. Therefore, it is not difficult to know that the damage of laser to human skin is mainly due to the thermal effect produced by laser.
Although the damage to human skin caused by laser irradiation is not enough to affect the overall functional structure of skin tissue, it is still necessary to strengthen the protection of human skin during daily teaching and use, wearing protective clothing as required to minimize the damage of laser on human skin.
When the laser damages the human body, the damage to the eyes is the most serious.
The human eye is an approximate spherical body, which composed of the eyeball wall, contents of the eyeball and retina. The eyeball wall is composed of three layers of membranes with different textures: cornea and sclera, iris and choroid, retina. The ocular contents include lens, aqueous humor, and vitreous.
The refractive system of the eyeball is composed of the cornea and the contents of the eye. Because of its transparent nature, the light will not be blocked when passing through. The cornea, iris, lens, vitreous, aqueous humor and etc. together form the precise optical system for the human body to receive light.
The refractive system has the characteristics of low absorption rate, high transmittance and strong focusing ability, which allows the laser to pass through the refractive system and reach the retina when it enters the eye. At this time, the laser energy density on the retina can be increased by thousands or even tens of thousands of times. High retinal temperature leads to photoreceptor cell necrosis, irreversible damage, and even permanent blindness.
The damage of far-infrared laser to the eye is mainly aimed at the cornea, while the ultraviolet laser is mainly absorbed by the lens. After the cornea is damaged, it will cause keratitis and conjunctivitis, and the injured will also be accompanied by symptoms such as fear of light, tearing, decreased vision, congestion and etc.. When the lens is damaged, will appear the phenomenon of lens turbidity.
Since the damage to the eyeball caused by laser irradiation is irreversible, ao it is necessary to attach great importance to the protection of the eyes when in use, wear goggles, keep a certain safe distance, and strictly abide by the relevant rules and regulations to avoid the occurrence of injury fundamentally.
At present, most cases of laser injury are accidental irradiation accidents, and a few are complications caused by laser treatment. When the human body is injured by the laser, it is necessary to take sufficient rest and protect it from light. If the trauma is serious, professional medical staff should be contacted immediately, and glucocorticoid therapy can be used if necessary.
Before using the laser for operation, should check whether there have light leakage, and seal the position where there may be light leakage; the working environment should maintain sufficient lighting, and a protective structure made of light-absorbing material should be used around it; individuals should first check whether goggles and protective uniforms are in good condition.
All in all, laser will cause serious damage to the human body, but to a large extent, we can avoid it by means of scientific norms.
