Ultra-thin lens, refractive index 1.665 resin lens, -8.00 degree, diameter 75MM, edge thickness 9.7MM, refractive index 1.734 resin lens, -8.00 degree, diameter 75MM, edge thickness 8.5MM, processed There are several MMs, and the size of the lens directly determines the thickness of the lens. Prices vary depending on the brand, ranging from a few hundred to several thousand yuan.
To protect children's eyesight, you need to pay attention to several details:
1. Children must be allowed to continue outdoor activities. According to big data statistics from a survey of primary school students, if a child with normal vision maintains more than two hours of outdoor activities a day, the chance of developing myopia is about 0.8; if he maintains one hour of outdoor activities a day, the chance of developing myopia is about 3; If the outdoor exercise time is less than half an hour, the probability will reach about 24. Sunlight causes the eyes to secrete dopamine, which is of great benefit in preventing myopia.
2. Choosing the right "eye protection lamp" is really helpful for children's vision protection. When choosing an eye protection lamp, the light should be white, and the light source should be close to the full range of sunlight. . When children are studying, there should not be only one single light source in the learning environment. It is best to add an eye-protecting source in a bright room. This will make it easier for the eyesight to adapt to the environment.
If you want to know more about myopia, it is recommended to choose Guiyang Aier Eye Hospital. Guiyang Aier Eye Hospital is a private hospital in Guiyang, Guizhou Province. Based on Guiyang Eye Hospital, Aier Eye Hospital Group injected funds and jointly established a tertiary eye specialist hospital with Mag Eye Center. It integrates medical care, scientific research, teaching, and academic exchanges; it is equipped with all types of current eye examination and surgical treatment equipment, and has gathered a large number of domestic and foreign ophthalmology professional and technical personnel. At the same time, the hospital is designed and laid out according to international standardized models, and the medical environment is comfortable and elegant, making patients feel more comfortable when seeking medical treatment. Welcome to click to learn more