One, two-thirds of people live in light pollution. A survey report in the United States shows that about two-thirds of the people in the world live in light pollution. Moreover, the pollution caused by artificial light is increasing year by year, with an annual increase of 6% in Germany, 10% in Italy and 12% in Japan. Global110 drivers said that driving in the scorching sun would suddenly be attacked by the reflected light of the glass curtain wall, which made them lose sight of the direction in an instant. Russell, an endocrinologist at the University of Texas Health Science Center? Thomas Light even said, "Light is a medicine. Abuse of light is harmful to health. "
Second, the four major effects of lighting on human health: When you are blinded by the light reflected by the glass curtain wall, you can instinctively raise your hand to cover your eyes or avoid the light, but some light pollution and its harm may be unconscious. In recent years, the disputes caused by light pollution have increased year by year, and its impact on health has to attract our attention.
1. leads to cataract. According to the investigation, the myopia rate of children who turn on the lights at night before the age of 2 is about 55%; The myopia rate of children who turn off the lights to sleep is only about 10%. The bad visual environment caused by light pollution is considered to be an important factor for the high incidence of myopia. More research shows that the incidence of cataract is as high as 45% after working and living in an environment polluted by white light for a long time. Mars, chief ophthalmologist of Peking Union Medical College Hospital, told the reporter that if you are exposed to strong light or colored light for a long time, the function of the lens of the eye will be affected, which may lead to cataract after injury. So when you encounter strong light, you must avoid looking directly at the naked eye.
2. Upset, anxious, unable to sleep. The deputy director of Shanghai Traditional Chinese Medicine Insomnia Medical Cooperation Center said that although people's eyes are closed when they sleep, light will still pass through their eyelids and affect their sleep. According to his clinical statistics, about 5%-6% of insomnia is caused by environmental factors such as noise and light, among which light accounts for about 10%. "Once insomnia, the human body can't get enough rest, which will lead to deeper health problems."
3. Affect hormone secretion and even lead to precocious puberty in children. Russell? Thomas Light found that light shining on the retina at night can reduce the production of melatonin, which is an important substance for regulating the circadian rhythm. Light plunders the night and disrupts the rhythm of hormone secretion, which may lead to the imbalance of normal cycle. If children are exposed to too much light, the secretion of melatonin will be reduced, which will lead to precocious puberty or genital overgrowth. The secretion of other hormones also has circadian rhythm. For example, at 7: 00 or 8: 00 in the morning, male hormones peak, and lighting will have an impact on them. Light pollution can also affect people's mood, which indirectly affects hormone secretion.
4. It's depressing. Randy from Ohio State University? Professor Nelson said at the annual meeting of American Neuroscience on June 65438+1October 2 1 that too much exposure to light at night may lead to depression. Nie Jing also said that light pollution can lead to dizziness, depression, physical weakness and other symptoms similar to neurasthenia.
For people who work at night or have nightlife for a long time, light pollution is more harmful. 200 1 A study published in the Journal of National Cancer Institute shows that the longer women work at night, the greater the risk of breast cancer. Nie Jing also told reporters that long-term exposure to the colored light of the ballroom will induce nosebleeds, tooth loss, cataracts, and even leukemia and other cancers. Color light source is not only harmful to eyes, but also interferes with the central nervous system of the brain, causing symptoms such as nausea, vomiting, insomnia, inattention and low * * * >.
Three or six mistakes that are easy to make when using lights at home:
1. There are too few lights and the lights are too dim. In order to save money, some families are reluctant to invest in lamps. On average, only one or two lamps are installed in each space, and the wattage of the lamps is relatively small, which leads to the darkness of the whole room, and residents are prone to eye fatigue and melancholy.
There are too many lights, and the light is dazzling. Home is a private space, and its function requires that night lighting should not be as bright as day as shopping malls, specialty stores, restaurants and hair salons. And the home needs moderate and moderate light. However, there are often some people who deliberately pursue bright and gorgeous decorative effects and use a lot of lamps such as chandeliers, spotlights and downlights. As a result, too bright light causes great damage to the eyeball. If a large number of reflective materials are used in home decoration, strong reflection is harmful to human health.
3. Single light source, too much cold light. Home colors are divided into cold and warm, and home lighting is also divided into cold and warm. In order to create a warm and comfortable home atmosphere, we should follow the principle that warm colors are the mainstay and cool colors are the supplement. As long as the warm light source and the cold light source are properly matched, it can not only meet the indoor lighting, but also make the home filled with a harmonious, serene, warm and even romantic atmosphere. Some people prefer cool colors and use cold light sources too much at home, forming a serious and cold style. I believe that not many people like this kind of atmosphere at home.
4. Improper use of lamps and lanterns, too strong contrast between light and shade. Indoor light should be kept as soft and uniform as possible, without glare and shadow. In order to create special effects in some spaces, some people use lamps with opaque lampshades indoors, which leads to clear indoor light and shade. When people's eyes turn from bright area to dark area, it takes some time for them to get used to seeing objects in dark area, which easily leads to visual fatigue.
5. The color is chaotic and the nerves are * * *. In order to create a romantic and warm atmosphere, some young people use some colored lights in the decoration, such as pink, blue, purple and yellow. These people don't take into account the influence of various colors on mood. Home is not a stage, so they should not be too messy in terms of light and color, otherwise it will make people feel excited, and staying for a long time will lead to irritability.
6. There is no difference in indoor lighting. At home, different indoor spaces have different requirements for light intensity because of their different functions. Ancient geomantic omen put forward the principle of "the hall is bright and the room is dark", which means that the lighting in living room, study room and dining room is stronger than that in bedroom and kitchen, so the lighting design is more in line with people's life rules. If the light intensity of all indoor spaces is the same, it will bring inconvenience to residents' daily life.
(Excerpt from: Lighting Rental Sharing Station)
References: 1 Journal of Jane Liren's Drama, National Taipei University of the Arts, Phase II, 2 Vocabulary of Light and Shadow of Jane Liren's Modern Drama-Design Thinking of Drama Aesthetics of Lighting Creation, 3 Stone 1997 Application of Interior Lighting Design