"The child is myopic in the second grade of primary school, and he was recommended to defocus glasses when he was fitted with glasses, I don't know if it is reliable?.""Defocus glasses have become a new choice for many children with myopia. The reporter of the people's ** health client found through multi-channel inquiries that this kind of myopia prevention and control glasses have been widely used in the ophthalmology department and optometry institutions of hospitals for the management of children's myopia.
What are defocal lenses?According to the "Myopia Management *** 2022", the control methods of progressive myopia include orthokeratology lenses, multifocal soft contact lenses, specially designed eyeglasses (hereinafter referred to as myopia prevention and control glasses), and low-concentration atropine eye drops. The defocus glasses mentioned by Ms. Zhang belong to a type of myopia prevention and control glasses.
Myopia Management *** 2022)" diagram.
The appearance of myopia prevention and control glasses is the same as that of ordinary glasses, but there is a special design on the lenses, and different lenses play a role in inhibiting myopia progression through different mechanisms, such as increasing near addition, peripheral defocus, increasing retinal aberration and reducing the contrast of retinal periphery. Zheng Xiaoyu, deputy director of the Department of Ophthalmology of the Children's Hospital Affiliated to Zhejiang University School of Medicine, introduced that myopia prevention and control glasses include bifocals, bifocals combined with prisms, progressive multifocal lenses, peripheral zoom lenses, and special optical lenses with microstructure design, all of which have a certain myopia control effect.
Myopia prevention and control glasses are popular among many children and parents. Because it is easy to wear, there are fewer adverse reactions to the cornea, and it is more acceptable than orthokeratology lenses and multifocal soft contact lenses. Zheng Xiaoyu said.
At present, peripheral zoom lenses and glasses with microstructure design are more popular in the domestic market. It should be noted that wearing these specially designed glasses may cause blurred peripheral vision, and you can turn your head when looking at surrounding objects, and your eyes will still see through the lenses**. Most children can adapt within 1 week. Try to wear it throughout the day, at least more than 12 hours a day. The test should be repeated every 3 to 6 months, and if the power increases by more than 25 degrees, a change in eye habits, a change in the type of glasses, or a combination of drugs should be considered**.