Photochromic Prescription Glasses Lens CR-39 Resin Aspheric Lens Blue Pink Purple Grey Brown Lenses Color:Myopia Grey Fashion Earrings : small earrings

Fashion Earrings : small earrings

Earrings Material: silver

Model Number : GVB97570

Polished or Raw: Polished/raw

Model Number : UV114

Photochromic Prescription Glasses Lens CR-39 Resin Aspheric Lens Blue Pink Purple Grey Brown Lenses Color:Myopia Grey Fashion Earrings : small earringsHow to choose lens index Lens index reflects lens thickness, there is 1. 56, 1. 61, 1. 67 index etc. The higher lens index is, the thinner lens is. 1. 67 is thinner than 1. 61 than 1. 56 at the same degree. Lens thickness also depends on frame size. The bigger frame is, the thicker lens is. 1. 56 index suggestion degree: SPH: 0. 00 ~ 4. 00; CYL: 0. 50~ 2. 00 SPH: +0. 50~+4. 00; CYL:+0. 50~+2. 00 1. 61 index suggestion degree: SPH: 0. 00 ~ 6. 00; CYL: