LED desk lamp to prevent myopia?

The impact of light on vision is mainly reflected in these areas: strobe, ultraviolet light, and color rendering index. The CCTV10 science and education program tested the effects of various lamps on vision. The results showed that there was no flicker, no ultraviolet light, and the color rendering property reached more than 90, indicating that the LED as eye protection product seems to be perfect. Do you believe it?

Experts say that LED is not suitable as a table lamp. In recent years, the Institute of Electric Light Sources of Fudan University has conducted extensive tests on the domestic reading lamp market and found that LED blue light is a lot and it is not good for eyesight. In addition to the Blu-ray problem, the common problem of LED desk lamps in the previous few years was insufficient light flux and dark lighting. In addition, in terms of color rendering, the colors would be distorted when viewed under LED desk lamps; at the same time, only very good results could be obtained. The small part, this is called the light distribution is not suitable; And, the LED table lamp's luminous point is bright, looks straightforward also will feel very dazzling, the eye will feel very uncomfortable. At present, the country does not have a uniform standard for LED table lamps. Some very rare LED table lamps are actually not beneficial to the eyes. Therefore, in addition to individual products of particularly good quality, they do not play a good role in eye protection.

The principle is that vision is not only affected by the single factor of lighting, but it is also influenced by other factors. At present, it is generally believed that the causes of myopia include: 1. Genetic factors, especially those with high myopia. 2, developmental factors, the curvature of the lens in the eyeball is gradually larger with the age of the ancestors, if the development is excessive, the axial length is gradually increased, the formation of myopia. 3, environmental factors, which is the main cause of many of myopia patients today. The rate of myopia among young students has gradually increased. This is inseparable from the more and more developed technology in today’s society. Caused by today's young people myopia is mainly long-term watching TV, the Internet, playing electronic games and other inadvertent eyes caused by, of course, because of reading, writing posture is not correct, books put away from the eyes, or poor lighting conditions and other reasons . These will continue to shrink the muscles in the ciliary body, increase the F-degree of the lens, make the muscles in the ciliary body to be in a state of tension, and change the lens of the F can not be restored to a normal state, thus causing false myopia. If at this time still do not pay attention to take effective control measures, it will become true myopia. 4, other factors, such as changes in nutrients. Therefore, to prevent myopia, do not just change the lights, but more should start with other reasons, will make our eyes better!

Online shopping said that since LED desk lamps are light and fashionable, most consumers still like to shop online, especially young students. The current problem is that some Taobao sellers are using LED desk lamps as the eye-protection devices. They are unilaterally propagating and excessively raising the prices of their products. The same LED table lamp has sold 30 yuan, but also sells more than 300 yuan. Yes, it is very easy for consumers to feel confused when they choose to buy goods. Taobao majority of sellers of LED lamps or propaganda eye lamp-based, but there are still several sellers, directly under the name of the LED table lamp is able to prevent nearsightedness, protect the eyes of the voice to promote products, its price is higher than similar LED table lamp Several times, this overstatement of the use value of the product, the result is very little sales. For the purchase of LED lamps, personal advice or choose not to choose expensive.