Ring focus lenses blue light lenses 1.60 index defocus lens Delay myopia progression prescription resin lenses CR39 astigmatism
Brand Name: SHINUCoating: HMCLenses Material: CR-39Origin: CN(Origin)Gender: MenLenses Optical Attribute: Anti-reflectiveLenses Optical Attribute: GradientLenses Optical Attribute: MIRRORLenses Optical Attribute: PhotochromicCertification: CEModel Number: sh360lensEyewear Accessories: LensesItem Type: Eyewear AccessoriesPlace Of Origin: China (Mainland) Ring focus lenses are the fourth generation of multifunctional lenses, also known as defocus lenses, or face-controlled lenses. The diopter gradually decreases from the center to the edge of the lens to reduce the shape deprivation in myopia, correct the focal phenomenon at the edge of the visual field, control the growth of the eye axis, and delay the development of myopia. The relative progressive multifocal lens not only changes the upper and lower diopter of the lens, but also changes the left and right luminosity, making the afocal lens more suitable for the prevention and treatment of juvenile myopia; especially for juveniles (4-1