At the moment when winter and spring are alternate seasons, bacteria and viruses are easy to breed, and with the outbreak of the new crown virus, many families are beginning to pay more and more attention to home cleaning and sterilization.
The traditional method is to use more sun for sterilization and disinfection. The ultraviolet rays in the sun are a natural disinfectant. According to research, it can kill the pathogens of various respiratory infectious diseases, such as influenza virus, measles virus, meningococcus, etc. Therefore, if the human body is exposed to the sun, it is necessary to take protective measures for the eyes and skin (ultraviolet rays are also risk factors for various skin cancers).
However, during the Spring Festival, the weather is rainy and less sunny, and the light is obviously insufficient. Therefore, traditional methods cannot be effective, and more people choose to use ultraviolet lamps to achieve the same purpose. But the problem is that improper use of UV lamps can cause accidents and even threaten personal life and health.
There have been news reports recently that a family of four had their eyes exposed to ultraviolet light for 40 minutes to disinfect the new coronavirus! Lead to electrical ophthalmia!
Electrooptical ophthalmia (also known as snow blindness) is inflammation caused by ultraviolet rays that damage the cornea and conjunctival epithelium. Electric welding, plateaus, snow and water reflections can all cause electro-optic ophthalmia.
Clinical manifestations: red and swollen eyelids, conjunctival congestion and edema, severe foreign body sensation and pain, symptoms include photophobia, tearing, and inability to open eyes, and blurred vision during the onset. Symptoms usually attack 3-8 hours after irradiation, and symptoms are relieved or healed after 24 hours.
Treatment methods: local cold compresses; local anesthetics can temporarily relieve pain; eye drops that promote corneal epithelial repair can be added to lubricate and repair.
Considering that there are more and more cases where homes choose to use ultraviolet lamps, Shenzhen LightS Technology Co., Ltd. kindly reminds you to remember to choose qualified products produced by regular manufacturers and carefully understand the product instructions. The following tips may be useful to you.
Warm and small tips for using UV lamps correctly
1. Can ultraviolet lamps kill the new coronavirus? According to the newly released "Quick Guide to Diagnosis and Treatment of Novel Coronavirus Pneumonia", in addition to 75% alcohol, ether, chloroform, formaldehyde, chlorine-containing disinfectants, peracetic acid, and 222nm UVC lamp can also inactivate viruses up to 99.9%.
2. How is the ultraviolet lamp sterilized? Its principle is to use the ultraviolet light wave (UV-C) in the natural spectrum to directly destroy the DNA chain of harmful microorganisms, so that they lose the function of reproduction and self-replication, so as to achieve the sterilization effect.
3. How to ensure the best sterilization effect? To achieve the sterilization effect (the killing rate in 30 minutes is >99%), the ultraviolet intensity should be no less than 25 μW/cm2 when the distance is less than 2.5 meters. Make sure that the ultraviolet rays must be in a closed space after turning on the lamp. Avoid ultraviolet rays irradiating people to cause damage, especially damage to the eyes (electric ophthalmia) and skin (skin cancer).
4. If you use ordinary UV lamps to cause injuries due to operating errors, can the human body heal by itself? Just as our human body can slowly repair after sunburn, under normal circumstances, the human body can be healed if damaged by ultraviolet rays. However, if you have been exposed to radiation for too long, or directly hurt your eyes, as in the previous example of a family of four, you need to seek medical attention in time.
5. Why open doors and windows for ventilation after using ultraviolet disinfection? Because some UV lamps on the market produce ozone during the turn-on process, which is harmful to humans, it is recommended to ventilate for more than 30 minutes after use, or you can choose Shenzhen LightS Technology Co., Ltd. Ozone-free 222nm UV disinfection lamp (the latest technology It is not harmful to human skin and eyes). It uses chemical ingredients that inhibit the formation of ozone in the light formula, which is safer.