As a common sterilization method, ultraviolet lamp irradiation is widely used in all walks of life. With SARS, ultraviolet rays began to gradually enter families and schools. While playing the role of sterilization and disinfection, due to improper operation and ignorance of ultraviolet characteristics, hidden dangers cannot be ignored.
Miss Wu, a nursing expert, told the reporter that if people's eyes and skin are exposed to ultraviolet rays for more than 3 minutes, it may exceed the human safety limit. After direct irradiation 15 minutes, the cornea will be damaged, resulting in electro-optic ophthalmia, sudden and severe pain in both eyes, foreign body sensation, photophobia, tears or blepharospasm. Long-term radiation can damage eyes and skin, lead to eye trauma and severe skin burns, and may lead to skin cancer.
Professor Chen, an ophthalmologist, believes that in addition to improper human operation, some businesses selling or manufacturing ultraviolet lamps have not fully informed their products of possible safety hazards, which has also contributed to the occurrence of dangers.
Professor Chen said that there are no special laws and regulations to supervise the sale and use of ultraviolet lamps. However, some users lack corresponding safety awareness, lax supervision, and lack of warning signs, which makes the ultraviolet light turn on by mistake or make people go into the irradiation range by mistake, thus leading to accidents. Therefore, Professor Chen called on relevant departments to strengthen source supervision, formulate a series of safety standards and product use specifications, and strengthen publicity on the side effects of ultraviolet lamps.
Ophthalmologists in the Affiliated Hospital of Hainan Medical College said that ultraviolet rays have bactericidal effects, such as bacteria in the air and bacteria on the surface of objects, which can be killed after being irradiated by ultraviolet rays for a certain period of time, and are commonly used in clinical disinfection of medical devices and wards.
So now many restaurants, hotels and wards are equipped with ultraviolet lights.
If ultraviolet rays are overexposed, it will be harmful to human body. If ultraviolet rays strongly act on the skin, actinic dermatitis can occur, and some erythema, itching and edema will appear on the skin. Acting on the central nervous system, headache, dizziness and elevated body temperature may occur; When it acts on eyes, it can cause conjunctivitis and keratitis, which is called actinic ophthalmia. Long-term exposure to ultraviolet rays may even lead to skin cancer and cataract, so workers who are often exposed to strong ultraviolet rays should wear special protective masks, protective glasses and protective gloves. References:
Southern Metropolis Daily News Evening News