Single Vision Lens 1.499

1.*9 Lenses 1.*9 is made from CR**9 material imported from Korea. This kind of lens has the lowest refractive index and the least dispersion coefficient among all lenses. Its advantages include stable quality and the low dispersion coefficient which can protect eyes better to slow down myopia, presbyopia and astigmatism; its disadvantage is that the product's lens is thicker than others', so it is the best choice for middle-aged and elderly people. This kind of lens is cheaper than other kinds.